/*
* hostapd - IEEE 802.11r - Fast BSS Transition
- * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2004-2018, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
#include "utils/list.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
+#include "common/ocv.h"
+#include "drivers/driver.h"
+#include "crypto/aes.h"
+#include "crypto/aes_siv.h"
#include "crypto/aes_wrap.h"
+#include "crypto/sha384.h"
#include "crypto/random.h"
#include "ap_config.h"
#include "ieee802_11.h"
#include "wmm.h"
#include "wpa_auth.h"
#include "wpa_auth_i.h"
+#include "pmksa_cache_auth.h"
-#ifdef CONFIG_IEEE80211R
+#ifdef CONFIG_IEEE80211R_AP
+
+const unsigned int ftRRBseqTimeout = 10;
+const unsigned int ftRRBmaxQueueLen = 100;
+
static int wpa_ft_send_rrb_auth_resp(struct wpa_state_machine *sm,
const u8 *current_ap, const u8 *sta_addr,
u16 status, const u8 *resp_ies,
size_t resp_ies_len);
+static void ft_finish_pull(struct wpa_state_machine *sm);
+static void wpa_ft_expire_pull(void *eloop_ctx, void *timeout_ctx);
+static void wpa_ft_rrb_seq_timeout(void *eloop_ctx, void *timeout_ctx);
+
+struct tlv_list {
+ u16 type;
+ size_t len;
+ const u8 *data;
+};
+
+
+/**
+ * wpa_ft_rrb_decrypt - Decrypt FT RRB message
+ * @key: AES-SIV key for AEAD
+ * @key_len: Length of key in octets
+ * @enc: Pointer to encrypted TLVs
+ * @enc_len: Length of encrypted TLVs in octets
+ * @auth: Pointer to authenticated TLVs
+ * @auth_len: Length of authenticated TLVs in octets
+ * @src_addr: MAC address of the frame sender
+ * @type: Vendor-specific subtype of the RRB frame (FT_PACKET_*)
+ * @plain: Pointer to return the pointer to the allocated plaintext buffer;
+ * needs to be freed by the caller if not NULL;
+ * will only be returned on success
+ * @plain_len: Pointer to return the length of the allocated plaintext buffer
+ * in octets
+ * Returns: 0 on success, -1 on error
+ */
+static int wpa_ft_rrb_decrypt(const u8 *key, const size_t key_len,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, const size_t auth_len,
+ const u8 *src_addr, u8 type,
+ u8 **plain, size_t *plain_size)
+{
+ const u8 *ad[3] = { src_addr, auth, &type };
+ size_t ad_len[3] = { ETH_ALEN, auth_len, sizeof(type) };
+
+ wpa_printf(MSG_DEBUG, "FT(RRB): src_addr=" MACSTR " type=%u",
+ MAC2STR(src_addr), type);
+ wpa_hexdump_key(MSG_DEBUG, "FT(RRB): decrypt using key", key, key_len);
+ wpa_hexdump(MSG_DEBUG, "FT(RRB): encrypted TLVs", enc, enc_len);
+ wpa_hexdump(MSG_DEBUG, "FT(RRB): authenticated TLVs", auth, auth_len);
+
+ if (!key) { /* skip decryption */
+ *plain = os_memdup(enc, enc_len);
+ if (enc_len > 0 && !*plain)
+ goto err;
+
+ *plain_size = enc_len;
+
+ return 0;
+ }
+
+ *plain = NULL;
+
+ /* SIV overhead */
+ if (enc_len < AES_BLOCK_SIZE)
+ goto err;
+
+ *plain = os_zalloc(enc_len - AES_BLOCK_SIZE);
+ if (!*plain)
+ goto err;
+
+ if (aes_siv_decrypt(key, key_len, enc, enc_len, 3, ad, ad_len,
+ *plain) < 0) {
+ if (enc_len < AES_BLOCK_SIZE + 2)
+ goto err;
+
+ /* Try to work around Ethernet devices that add extra
+ * two octet padding even if the frame is longer than
+ * the minimum Ethernet frame. */
+ enc_len -= 2;
+ if (aes_siv_decrypt(key, key_len, enc, enc_len, 3, ad, ad_len,
+ *plain) < 0)
+ goto err;
+ }
+
+ *plain_size = enc_len - AES_BLOCK_SIZE;
+ wpa_hexdump_key(MSG_DEBUG, "FT(RRB): decrypted TLVs",
+ *plain, *plain_size);
+ return 0;
+err:
+ os_free(*plain);
+ *plain = NULL;
+ *plain_size = 0;
+
+ wpa_printf(MSG_ERROR, "FT(RRB): Failed to decrypt");
+
+ return -1;
+}
+
+
+/* get first tlv record in packet matching type
+ * @data (decrypted) packet
+ * @return 0 on success else -1
+ */
+static int wpa_ft_rrb_get_tlv(const u8 *plain, size_t plain_len,
+ u16 type, size_t *tlv_len, const u8 **tlv_data)
+{
+ const struct ft_rrb_tlv *f;
+ size_t left;
+ le16 type16;
+ size_t len;
+
+ left = plain_len;
+ type16 = host_to_le16(type);
+
+ while (left >= sizeof(*f)) {
+ f = (const struct ft_rrb_tlv *) plain;
+
+ left -= sizeof(*f);
+ plain += sizeof(*f);
+ len = le_to_host16(f->len);
+
+ if (left < len) {
+ wpa_printf(MSG_DEBUG, "FT: RRB message truncated");
+ break;
+ }
+
+ if (f->type == type16) {
+ *tlv_len = len;
+ *tlv_data = plain;
+ return 0;
+ }
+
+ left -= len;
+ plain += len;
+ }
+
+ return -1;
+}
+
+
+static void wpa_ft_rrb_dump(const u8 *plain, const size_t plain_len)
+{
+ const struct ft_rrb_tlv *f;
+ size_t left;
+ size_t len;
+
+ left = plain_len;
+
+ wpa_printf(MSG_DEBUG, "FT: RRB dump message");
+ while (left >= sizeof(*f)) {
+ f = (const struct ft_rrb_tlv *) plain;
+
+ left -= sizeof(*f);
+ plain += sizeof(*f);
+ len = le_to_host16(f->len);
+
+ wpa_printf(MSG_DEBUG, "FT: RRB TLV type = %d, len = %zu",
+ le_to_host16(f->type), len);
+
+ if (left < len) {
+ wpa_printf(MSG_DEBUG,
+ "FT: RRB message truncated: left %zu bytes, need %zu",
+ left, len);
+ break;
+ }
+
+ wpa_hexdump(MSG_DEBUG, "FT: RRB TLV data", plain, len);
+
+ left -= len;
+ plain += len;
+ }
+
+ if (left > 0)
+ wpa_hexdump(MSG_DEBUG, "FT: RRB TLV padding", plain, left);
+
+ wpa_printf(MSG_DEBUG, "FT: RRB dump message end");
+}
+
+
+static int cmp_int(const void *a, const void *b)
+{
+ int x, y;
+
+ x = *((int *) a);
+ y = *((int *) b);
+ return x - y;
+}
+
+
+static int wpa_ft_rrb_get_tlv_vlan(const u8 *plain, const size_t plain_len,
+ struct vlan_description *vlan)
+{
+ struct ft_rrb_tlv *f;
+ size_t left;
+ size_t len;
+ int taggedidx;
+ int vlan_id;
+ int type;
+
+ left = plain_len;
+ taggedidx = 0;
+ os_memset(vlan, 0, sizeof(*vlan));
+
+ while (left >= sizeof(*f)) {
+ f = (struct ft_rrb_tlv *) plain;
+
+ left -= sizeof(*f);
+ plain += sizeof(*f);
+
+ len = le_to_host16(f->len);
+ type = le_to_host16(f->type);
+
+ if (left < len) {
+ wpa_printf(MSG_DEBUG, "FT: RRB message truncated");
+ return -1;
+ }
+
+ if (type != FT_RRB_VLAN_UNTAGGED && type != FT_RRB_VLAN_TAGGED)
+ goto skip;
+
+ if (type == FT_RRB_VLAN_UNTAGGED && len != sizeof(le16)) {
+ wpa_printf(MSG_DEBUG,
+ "FT: RRB VLAN_UNTAGGED invalid length");
+ return -1;
+ }
+
+ if (type == FT_RRB_VLAN_TAGGED && len % sizeof(le16) != 0) {
+ wpa_printf(MSG_DEBUG,
+ "FT: RRB VLAN_TAGGED invalid length");
+ return -1;
+ }
+
+ while (len >= sizeof(le16)) {
+ vlan_id = WPA_GET_LE16(plain);
+ plain += sizeof(le16);
+ left -= sizeof(le16);
+ len -= sizeof(le16);
+
+ if (vlan_id <= 0 || vlan_id > MAX_VLAN_ID) {
+ wpa_printf(MSG_DEBUG,
+ "FT: RRB VLAN ID invalid %d",
+ vlan_id);
+ continue;
+ }
+
+ if (type == FT_RRB_VLAN_UNTAGGED)
+ vlan->untagged = vlan_id;
+
+ if (type == FT_RRB_VLAN_TAGGED &&
+ taggedidx < MAX_NUM_TAGGED_VLAN) {
+ vlan->tagged[taggedidx] = vlan_id;
+ taggedidx++;
+ } else if (type == FT_RRB_VLAN_TAGGED) {
+ wpa_printf(MSG_DEBUG, "FT: RRB too many VLANs");
+ }
+ }
+
+ skip:
+ left -= len;
+ plain += len;
+ }
+
+ if (taggedidx)
+ qsort(vlan->tagged, taggedidx, sizeof(int), cmp_int);
+
+ vlan->notempty = vlan->untagged || vlan->tagged[0];
+
+ return 0;
+}
+
+
+static size_t wpa_ft_tlv_len(const struct tlv_list *tlvs)
+{
+ size_t tlv_len = 0;
+ int i;
+
+ if (!tlvs)
+ return 0;
+
+ for (i = 0; tlvs[i].type != FT_RRB_LAST_EMPTY; i++) {
+ tlv_len += sizeof(struct ft_rrb_tlv);
+ tlv_len += tlvs[i].len;
+ }
+
+ return tlv_len;
+}
+
+
+static size_t wpa_ft_tlv_lin(const struct tlv_list *tlvs, u8 *start,
+ u8 *endpos)
+{
+ int i;
+ size_t tlv_len;
+ struct ft_rrb_tlv *hdr;
+ u8 *pos;
+
+ if (!tlvs)
+ return 0;
+
+ tlv_len = 0;
+ pos = start;
+ for (i = 0; tlvs[i].type != FT_RRB_LAST_EMPTY; i++) {
+ if (tlv_len + sizeof(*hdr) > (size_t) (endpos - start))
+ return tlv_len;
+ tlv_len += sizeof(*hdr);
+ hdr = (struct ft_rrb_tlv *) pos;
+ hdr->type = host_to_le16(tlvs[i].type);
+ hdr->len = host_to_le16(tlvs[i].len);
+ pos = start + tlv_len;
+
+ if (tlv_len + tlvs[i].len > (size_t) (endpos - start))
+ return tlv_len;
+ if (tlvs[i].len == 0)
+ continue;
+ tlv_len += tlvs[i].len;
+ os_memcpy(pos, tlvs[i].data, tlvs[i].len);
+ pos = start + tlv_len;
+ }
+
+ return tlv_len;
+}
+
+
+static size_t wpa_ft_vlan_len(const struct vlan_description *vlan)
+{
+ size_t tlv_len = 0;
+ int i;
+
+ if (!vlan || !vlan->notempty)
+ return 0;
+
+ if (vlan->untagged) {
+ tlv_len += sizeof(struct ft_rrb_tlv);
+ tlv_len += sizeof(le16);
+ }
+ if (vlan->tagged[0])
+ tlv_len += sizeof(struct ft_rrb_tlv);
+ for (i = 0; i < MAX_NUM_TAGGED_VLAN && vlan->tagged[i]; i++)
+ tlv_len += sizeof(le16);
+
+ return tlv_len;
+}
+
+
+static size_t wpa_ft_vlan_lin(const struct vlan_description *vlan,
+ u8 *start, u8 *endpos)
+{
+ size_t tlv_len;
+ int i, len;
+ struct ft_rrb_tlv *hdr;
+ u8 *pos = start;
+
+ if (!vlan || !vlan->notempty)
+ return 0;
+
+ tlv_len = 0;
+ if (vlan->untagged) {
+ tlv_len += sizeof(*hdr);
+ if (start + tlv_len > endpos)
+ return tlv_len;
+ hdr = (struct ft_rrb_tlv *) pos;
+ hdr->type = host_to_le16(FT_RRB_VLAN_UNTAGGED);
+ hdr->len = host_to_le16(sizeof(le16));
+ pos = start + tlv_len;
+
+ tlv_len += sizeof(le16);
+ if (start + tlv_len > endpos)
+ return tlv_len;
+ WPA_PUT_LE16(pos, vlan->untagged);
+ pos = start + tlv_len;
+ }
+
+ if (!vlan->tagged[0])
+ return tlv_len;
+
+ tlv_len += sizeof(*hdr);
+ if (start + tlv_len > endpos)
+ return tlv_len;
+ hdr = (struct ft_rrb_tlv *) pos;
+ hdr->type = host_to_le16(FT_RRB_VLAN_TAGGED);
+ len = 0; /* len is computed below */
+ pos = start + tlv_len;
+
+ for (i = 0; i < MAX_NUM_TAGGED_VLAN && vlan->tagged[i]; i++) {
+ tlv_len += sizeof(le16);
+ if (start + tlv_len > endpos)
+ break;
+ len += sizeof(le16);
+ WPA_PUT_LE16(pos, vlan->tagged[i]);
+ pos = start + tlv_len;
+ }
+
+ hdr->len = host_to_le16(len);
+
+ return tlv_len;
+}
+
+
+static int wpa_ft_rrb_lin(const struct tlv_list *tlvs1,
+ const struct tlv_list *tlvs2,
+ const struct vlan_description *vlan,
+ u8 **plain, size_t *plain_len)
+{
+ u8 *pos, *endpos;
+ size_t tlv_len;
+
+ tlv_len = wpa_ft_tlv_len(tlvs1);
+ tlv_len += wpa_ft_tlv_len(tlvs2);
+ tlv_len += wpa_ft_vlan_len(vlan);
+
+ *plain_len = tlv_len;
+ *plain = os_zalloc(tlv_len);
+ if (!*plain) {
+ wpa_printf(MSG_ERROR, "FT: Failed to allocate plaintext");
+ goto err;
+ }
+
+ pos = *plain;
+ endpos = *plain + tlv_len;
+ pos += wpa_ft_tlv_lin(tlvs1, pos, endpos);
+ pos += wpa_ft_tlv_lin(tlvs2, pos, endpos);
+ pos += wpa_ft_vlan_lin(vlan, pos, endpos);
+
+ /* sanity check */
+ if (pos != endpos) {
+ wpa_printf(MSG_ERROR, "FT: Length error building RRB");
+ goto err;
+ }
+
+ return 0;
+
+err:
+ os_free(*plain);
+ *plain = NULL;
+ *plain_len = 0;
+ return -1;
+}
+
+
+static int wpa_ft_rrb_encrypt(const u8 *key, const size_t key_len,
+ const u8 *plain, const size_t plain_len,
+ const u8 *auth, const size_t auth_len,
+ const u8 *src_addr, u8 type, u8 *enc)
+{
+ const u8 *ad[3] = { src_addr, auth, &type };
+ size_t ad_len[3] = { ETH_ALEN, auth_len, sizeof(type) };
+
+ wpa_printf(MSG_DEBUG, "FT(RRB): src_addr=" MACSTR " type=%u",
+ MAC2STR(src_addr), type);
+ wpa_hexdump_key(MSG_DEBUG, "FT(RRB): plaintext message",
+ plain, plain_len);
+ wpa_hexdump_key(MSG_DEBUG, "FT(RRB): encrypt using key", key, key_len);
+ wpa_hexdump(MSG_DEBUG, "FT(RRB): authenticated TLVs", auth, auth_len);
+
+ if (!key) {
+ /* encryption not needed, return plaintext as packet */
+ os_memcpy(enc, plain, plain_len);
+ } else if (aes_siv_encrypt(key, key_len, plain, plain_len,
+ 3, ad, ad_len, enc) < 0) {
+ wpa_printf(MSG_ERROR, "FT: Failed to encrypt RRB-OUI message");
+ return -1;
+ }
+ wpa_hexdump(MSG_DEBUG, "FT(RRB): encrypted TLVs",
+ enc, plain_len + AES_BLOCK_SIZE);
+
+ return 0;
+}
+
+
+/**
+ * wpa_ft_rrb_build - Build and encrypt an FT RRB message
+ * @key: AES-SIV key for AEAD
+ * @key_len: Length of key in octets
+ * @tlvs_enc0: First set of to-be-encrypted TLVs
+ * @tlvs_enc1: Second set of to-be-encrypted TLVs
+ * @tlvs_auth: Set of to-be-authenticated TLVs
+ * @src_addr: MAC address of the frame sender
+ * @type: Vendor-specific subtype of the RRB frame (FT_PACKET_*)
+ * @packet Pointer to return the pointer to the allocated packet buffer;
+ * needs to be freed by the caller if not null;
+ * will only be returned on success
+ * @packet_len: Pointer to return the length of the allocated buffer in octets
+ * Returns: 0 on success, -1 on error
+ */
+static int wpa_ft_rrb_build(const u8 *key, const size_t key_len,
+ const struct tlv_list *tlvs_enc0,
+ const struct tlv_list *tlvs_enc1,
+ const struct tlv_list *tlvs_auth,
+ const struct vlan_description *vlan,
+ const u8 *src_addr, u8 type,
+ u8 **packet, size_t *packet_len)
+{
+ u8 *plain = NULL, *auth = NULL, *pos, *tmp;
+ size_t plain_len = 0, auth_len = 0;
+ int ret = -1;
+ size_t pad_len = 0;
+
+ *packet = NULL;
+ if (wpa_ft_rrb_lin(tlvs_enc0, tlvs_enc1, vlan, &plain, &plain_len) < 0)
+ goto out;
+
+ if (wpa_ft_rrb_lin(tlvs_auth, NULL, NULL, &auth, &auth_len) < 0)
+ goto out;
+
+ *packet_len = sizeof(u16) + auth_len + plain_len;
+ if (key)
+ *packet_len += AES_BLOCK_SIZE;
+#define RRB_MIN_MSG_LEN 64
+ if (*packet_len < RRB_MIN_MSG_LEN) {
+ pad_len = RRB_MIN_MSG_LEN - *packet_len;
+ if (pad_len < sizeof(struct ft_rrb_tlv))
+ pad_len = sizeof(struct ft_rrb_tlv);
+ wpa_printf(MSG_DEBUG,
+ "FT: Pad message to minimum Ethernet frame length (%d --> %d)",
+ (int) *packet_len, (int) (*packet_len + pad_len));
+ *packet_len += pad_len;
+ tmp = os_realloc(auth, auth_len + pad_len);
+ if (!tmp)
+ goto out;
+ auth = tmp;
+ pos = auth + auth_len;
+ WPA_PUT_LE16(pos, FT_RRB_LAST_EMPTY);
+ pos += 2;
+ WPA_PUT_LE16(pos, pad_len - sizeof(struct ft_rrb_tlv));
+ pos += 2;
+ os_memset(pos, 0, pad_len - sizeof(struct ft_rrb_tlv));
+ auth_len += pad_len;
+
+ }
+ *packet = os_zalloc(*packet_len);
+ if (!*packet)
+ goto out;
+
+ pos = *packet;
+ WPA_PUT_LE16(pos, auth_len);
+ pos += 2;
+ os_memcpy(pos, auth, auth_len);
+ pos += auth_len;
+ if (wpa_ft_rrb_encrypt(key, key_len, plain, plain_len, auth,
+ auth_len, src_addr, type, pos) < 0)
+ goto out;
+ wpa_hexdump(MSG_MSGDUMP, "FT: RRB frame payload", *packet, *packet_len);
+
+ ret = 0;
+
+out:
+ bin_clear_free(plain, plain_len);
+ os_free(auth);
+
+ if (ret) {
+ wpa_printf(MSG_ERROR, "FT: Failed to build RRB-OUI message");
+ os_free(*packet);
+ *packet = NULL;
+ *packet_len = 0;
+ }
+
+ return ret;
+}
+#define RRB_GET_SRC(srcfield, type, field, txt, checklength) do { \
+ if (wpa_ft_rrb_get_tlv(srcfield, srcfield##_len, type, \
+ &f_##field##_len, &f_##field) < 0 || \
+ (checklength > 0 && ((size_t) checklength) != f_##field##_len)) { \
+ wpa_printf(MSG_INFO, "FT: Missing required " #field \
+ " in %s from " MACSTR, txt, MAC2STR(src_addr)); \
+ wpa_ft_rrb_dump(srcfield, srcfield##_len); \
+ goto out; \
+ } \
+} while (0)
+
+#define RRB_GET(type, field, txt, checklength) \
+ RRB_GET_SRC(plain, type, field, txt, checklength)
+#define RRB_GET_AUTH(type, field, txt, checklength) \
+ RRB_GET_SRC(auth, type, field, txt, checklength)
+
+#define RRB_GET_OPTIONAL_SRC(srcfield, type, field, txt, checklength) do { \
+ if (wpa_ft_rrb_get_tlv(srcfield, srcfield##_len, type, \
+ &f_##field##_len, &f_##field) < 0 || \
+ (checklength > 0 && ((size_t) checklength) != f_##field##_len)) { \
+ wpa_printf(MSG_DEBUG, "FT: Missing optional " #field \
+ " in %s from " MACSTR, txt, MAC2STR(src_addr)); \
+ f_##field##_len = 0; \
+ f_##field = NULL; \
+ } \
+} while (0)
+
+#define RRB_GET_OPTIONAL(type, field, txt, checklength) \
+ RRB_GET_OPTIONAL_SRC(plain, type, field, txt, checklength)
+#define RRB_GET_OPTIONAL_AUTH(type, field, txt, checklength) \
+ RRB_GET_OPTIONAL_SRC(auth, type, field, txt, checklength)
+
static int wpa_ft_rrb_send(struct wpa_authenticator *wpa_auth, const u8 *dst,
const u8 *data, size_t data_len)
{
- if (wpa_auth->cb.send_ether == NULL)
+ if (wpa_auth->cb->send_ether == NULL)
return -1;
wpa_printf(MSG_DEBUG, "FT: RRB send to " MACSTR, MAC2STR(dst));
- return wpa_auth->cb.send_ether(wpa_auth->cb.ctx, dst, ETH_P_RRB,
- data, data_len);
+ return wpa_auth->cb->send_ether(wpa_auth->cb_ctx, dst, ETH_P_RRB,
+ data, data_len);
+}
+
+
+static int wpa_ft_rrb_oui_send(struct wpa_authenticator *wpa_auth,
+ const u8 *dst, u8 oui_suffix,
+ const u8 *data, size_t data_len)
+{
+ if (!wpa_auth->cb->send_oui)
+ return -1;
+ wpa_printf(MSG_DEBUG, "FT: RRB-OUI type %u send to " MACSTR " (len=%u)",
+ oui_suffix, MAC2STR(dst), (unsigned int) data_len);
+ return wpa_auth->cb->send_oui(wpa_auth->cb_ctx, dst, oui_suffix, data,
+ data_len);
}
static int wpa_ft_action_send(struct wpa_authenticator *wpa_auth,
const u8 *dst, const u8 *data, size_t data_len)
{
- if (wpa_auth->cb.send_ft_action == NULL)
+ if (wpa_auth->cb->send_ft_action == NULL)
return -1;
- return wpa_auth->cb.send_ft_action(wpa_auth->cb.ctx, dst,
- data, data_len);
+ return wpa_auth->cb->send_ft_action(wpa_auth->cb_ctx, dst,
+ data, data_len);
+}
+
+
+static const u8 * wpa_ft_get_psk(struct wpa_authenticator *wpa_auth,
+ const u8 *addr, const u8 *p2p_dev_addr,
+ const u8 *prev_psk)
+{
+ if (wpa_auth->cb->get_psk == NULL)
+ return NULL;
+ return wpa_auth->cb->get_psk(wpa_auth->cb_ctx, addr, p2p_dev_addr,
+ prev_psk, NULL, NULL);
}
static struct wpa_state_machine *
wpa_ft_add_sta(struct wpa_authenticator *wpa_auth, const u8 *sta_addr)
{
- if (wpa_auth->cb.add_sta == NULL)
+ if (wpa_auth->cb->add_sta == NULL)
return NULL;
- return wpa_auth->cb.add_sta(wpa_auth->cb.ctx, sta_addr);
+ return wpa_auth->cb->add_sta(wpa_auth->cb_ctx, sta_addr);
+}
+
+
+static int wpa_ft_set_vlan(struct wpa_authenticator *wpa_auth,
+ const u8 *sta_addr, struct vlan_description *vlan)
+{
+ if (!wpa_auth->cb->set_vlan)
+ return -1;
+ return wpa_auth->cb->set_vlan(wpa_auth->cb_ctx, sta_addr, vlan);
+}
+
+
+static int wpa_ft_get_vlan(struct wpa_authenticator *wpa_auth,
+ const u8 *sta_addr, struct vlan_description *vlan)
+{
+ if (!wpa_auth->cb->get_vlan)
+ return -1;
+ return wpa_auth->cb->get_vlan(wpa_auth->cb_ctx, sta_addr, vlan);
+}
+
+
+static int
+wpa_ft_set_identity(struct wpa_authenticator *wpa_auth, const u8 *sta_addr,
+ const u8 *identity, size_t identity_len)
+{
+ if (!wpa_auth->cb->set_identity)
+ return -1;
+ return wpa_auth->cb->set_identity(wpa_auth->cb_ctx, sta_addr, identity,
+ identity_len);
+}
+
+
+static size_t
+wpa_ft_get_identity(struct wpa_authenticator *wpa_auth, const u8 *sta_addr,
+ const u8 **buf)
+{
+ *buf = NULL;
+ if (!wpa_auth->cb->get_identity)
+ return 0;
+ return wpa_auth->cb->get_identity(wpa_auth->cb_ctx, sta_addr, buf);
+}
+
+
+static int
+wpa_ft_set_radius_cui(struct wpa_authenticator *wpa_auth, const u8 *sta_addr,
+ const u8 *radius_cui, size_t radius_cui_len)
+{
+ if (!wpa_auth->cb->set_radius_cui)
+ return -1;
+ return wpa_auth->cb->set_radius_cui(wpa_auth->cb_ctx, sta_addr,
+ radius_cui, radius_cui_len);
+}
+
+
+static size_t
+wpa_ft_get_radius_cui(struct wpa_authenticator *wpa_auth, const u8 *sta_addr,
+ const u8 **buf)
+{
+ *buf = NULL;
+ if (!wpa_auth->cb->get_radius_cui)
+ return 0;
+ return wpa_auth->cb->get_radius_cui(wpa_auth->cb_ctx, sta_addr, buf);
+}
+
+
+static void
+wpa_ft_set_session_timeout(struct wpa_authenticator *wpa_auth,
+ const u8 *sta_addr, int session_timeout)
+{
+ if (!wpa_auth->cb->set_session_timeout)
+ return;
+ wpa_auth->cb->set_session_timeout(wpa_auth->cb_ctx, sta_addr,
+ session_timeout);
+}
+
+
+static int
+wpa_ft_get_session_timeout(struct wpa_authenticator *wpa_auth,
+ const u8 *sta_addr)
+{
+ if (!wpa_auth->cb->get_session_timeout)
+ return 0;
+ return wpa_auth->cb->get_session_timeout(wpa_auth->cb_ctx, sta_addr);
}
const u8 *sta_addr,
u8 *tspec_ie, size_t tspec_ielen)
{
- if (wpa_auth->cb.add_tspec == NULL) {
+ if (wpa_auth->cb->add_tspec == NULL) {
wpa_printf(MSG_DEBUG, "FT: add_tspec is not initialized");
return -1;
}
- return wpa_auth->cb.add_tspec(wpa_auth->cb.ctx, sta_addr, tspec_ie,
- tspec_ielen);
+ return wpa_auth->cb->add_tspec(wpa_auth->cb_ctx, sta_addr, tspec_ie,
+ tspec_ielen);
+}
+
+
+#ifdef CONFIG_OCV
+static int wpa_channel_info(struct wpa_authenticator *wpa_auth,
+ struct wpa_channel_info *ci)
+{
+ if (!wpa_auth->cb->channel_info)
+ return -1;
+ return wpa_auth->cb->channel_info(wpa_auth->cb_ctx, ci);
}
+#endif /* CONFIG_OCV */
int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len)
}
-int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id,
- size_t r0kh_id_len,
+int wpa_write_ftie(struct wpa_auth_config *conf, int use_sha384,
+ const u8 *r0kh_id, size_t r0kh_id_len,
const u8 *anonce, const u8 *snonce,
u8 *buf, size_t len, const u8 *subelem,
size_t subelem_len)
{
u8 *pos = buf, *ielen;
- struct rsn_ftie *hdr;
+ size_t hdrlen = use_sha384 ? sizeof(struct rsn_ftie_sha384) :
+ sizeof(struct rsn_ftie);
- if (len < 2 + sizeof(*hdr) + 2 + FT_R1KH_ID_LEN + 2 + r0kh_id_len +
+ if (len < 2 + hdrlen + 2 + FT_R1KH_ID_LEN + 2 + r0kh_id_len +
subelem_len)
return -1;
*pos++ = WLAN_EID_FAST_BSS_TRANSITION;
ielen = pos++;
- hdr = (struct rsn_ftie *) pos;
- os_memset(hdr, 0, sizeof(*hdr));
- pos += sizeof(*hdr);
- WPA_PUT_LE16(hdr->mic_control, 0);
- if (anonce)
- os_memcpy(hdr->anonce, anonce, WPA_NONCE_LEN);
- if (snonce)
- os_memcpy(hdr->snonce, snonce, WPA_NONCE_LEN);
+ if (use_sha384) {
+ struct rsn_ftie_sha384 *hdr = (struct rsn_ftie_sha384 *) pos;
+
+ os_memset(hdr, 0, sizeof(*hdr));
+ pos += sizeof(*hdr);
+ WPA_PUT_LE16(hdr->mic_control, 0);
+ if (anonce)
+ os_memcpy(hdr->anonce, anonce, WPA_NONCE_LEN);
+ if (snonce)
+ os_memcpy(hdr->snonce, snonce, WPA_NONCE_LEN);
+ } else {
+ struct rsn_ftie *hdr = (struct rsn_ftie *) pos;
+
+ os_memset(hdr, 0, sizeof(*hdr));
+ pos += sizeof(*hdr);
+ WPA_PUT_LE16(hdr->mic_control, 0);
+ if (anonce)
+ os_memcpy(hdr->anonce, anonce, WPA_NONCE_LEN);
+ if (snonce)
+ os_memcpy(hdr->snonce, snonce, WPA_NONCE_LEN);
+ }
/* Optional Parameters */
*pos++ = FTIE_SUBELEM_R1KH_ID;
}
-struct wpa_ft_pmk_r0_sa {
- struct wpa_ft_pmk_r0_sa *next;
- u8 pmk_r0[PMK_LEN];
- u8 pmk_r0_name[WPA_PMK_NAME_LEN];
- u8 spa[ETH_ALEN];
- int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */
- /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */
- int pmk_r1_pushed;
+/* A packet to be handled after seq response */
+struct ft_remote_item {
+ struct dl_list list;
+
+ u8 nonce[FT_RRB_NONCE_LEN];
+ struct os_reltime nonce_ts;
+
+ u8 src_addr[ETH_ALEN];
+ u8 *enc;
+ size_t enc_len;
+ u8 *auth;
+ size_t auth_len;
+ int (*cb)(struct wpa_authenticator *wpa_auth,
+ const u8 *src_addr,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ int no_defer);
};
-struct wpa_ft_pmk_r1_sa {
- struct wpa_ft_pmk_r1_sa *next;
- u8 pmk_r1[PMK_LEN];
- u8 pmk_r1_name[WPA_PMK_NAME_LEN];
- u8 spa[ETH_ALEN];
- int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */
- /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */
-};
-struct wpa_ft_pmk_cache {
- struct wpa_ft_pmk_r0_sa *pmk_r0;
- struct wpa_ft_pmk_r1_sa *pmk_r1;
-};
+static void wpa_ft_rrb_seq_free(struct ft_remote_item *item)
+{
+ eloop_cancel_timeout(wpa_ft_rrb_seq_timeout, ELOOP_ALL_CTX, item);
+ dl_list_del(&item->list);
+ bin_clear_free(item->enc, item->enc_len);
+ os_free(item->auth);
+ os_free(item);
+}
+
+
+static void wpa_ft_rrb_seq_flush(struct wpa_authenticator *wpa_auth,
+ struct ft_remote_seq *rkh_seq, int cb)
+{
+ struct ft_remote_item *item, *n;
+
+ dl_list_for_each_safe(item, n, &rkh_seq->rx.queue,
+ struct ft_remote_item, list) {
+ if (cb && item->cb)
+ item->cb(wpa_auth, item->src_addr, item->enc,
+ item->enc_len, item->auth, item->auth_len, 1);
+ wpa_ft_rrb_seq_free(item);
+ }
+}
+
+
+static void wpa_ft_rrb_seq_timeout(void *eloop_ctx, void *timeout_ctx)
+{
+ struct ft_remote_item *item = timeout_ctx;
+
+ wpa_ft_rrb_seq_free(item);
+}
+
+
+static int
+wpa_ft_rrb_seq_req(struct wpa_authenticator *wpa_auth,
+ struct ft_remote_seq *rkh_seq, const u8 *src_addr,
+ const u8 *f_r0kh_id, size_t f_r0kh_id_len,
+ const u8 *f_r1kh_id, const u8 *key, size_t key_len,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ int (*cb)(struct wpa_authenticator *wpa_auth,
+ const u8 *src_addr,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ int no_defer))
+{
+ struct ft_remote_item *item = NULL;
+ u8 *packet = NULL;
+ size_t packet_len;
+ struct tlv_list seq_req_auth[] = {
+ { .type = FT_RRB_NONCE, .len = FT_RRB_NONCE_LEN,
+ .data = NULL /* to be filled: item->nonce */ },
+ { .type = FT_RRB_R0KH_ID, .len = f_r0kh_id_len,
+ .data = f_r0kh_id },
+ { .type = FT_RRB_R1KH_ID, .len = FT_R1KH_ID_LEN,
+ .data = f_r1kh_id },
+ { .type = FT_RRB_LAST_EMPTY, .len = 0, .data = NULL },
+ };
+
+ if (dl_list_len(&rkh_seq->rx.queue) >= ftRRBmaxQueueLen) {
+ wpa_printf(MSG_DEBUG, "FT: Sequence number queue too long");
+ goto err;
+ }
+
+ wpa_printf(MSG_DEBUG, "FT: Send sequence number request from " MACSTR
+ " to " MACSTR,
+ MAC2STR(wpa_auth->addr), MAC2STR(src_addr));
+ item = os_zalloc(sizeof(*item));
+ if (!item)
+ goto err;
+
+ os_memcpy(item->src_addr, src_addr, ETH_ALEN);
+ item->cb = cb;
+
+ if (random_get_bytes(item->nonce, FT_RRB_NONCE_LEN) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Seq num nonce: out of random bytes");
+ goto err;
+ }
+
+ if (os_get_reltime(&item->nonce_ts) < 0)
+ goto err;
+
+ if (enc && enc_len > 0) {
+ item->enc = os_memdup(enc, enc_len);
+ item->enc_len = enc_len;
+ if (!item->enc)
+ goto err;
+ }
+
+ if (auth && auth_len > 0) {
+ item->auth = os_memdup(auth, auth_len);
+ item->auth_len = auth_len;
+ if (!item->auth)
+ goto err;
+ }
+
+ eloop_register_timeout(ftRRBseqTimeout, 0, wpa_ft_rrb_seq_timeout,
+ wpa_auth, item);
+
+ seq_req_auth[0].data = item->nonce;
+
+ if (wpa_ft_rrb_build(key, key_len, NULL, NULL, seq_req_auth, NULL,
+ wpa_auth->addr, FT_PACKET_R0KH_R1KH_SEQ_REQ,
+ &packet, &packet_len) < 0) {
+ item = NULL; /* some other seq resp might still accept this */
+ goto err;
+ }
+
+ dl_list_add(&rkh_seq->rx.queue, &item->list);
+
+ wpa_ft_rrb_oui_send(wpa_auth, src_addr, FT_PACKET_R0KH_R1KH_SEQ_REQ,
+ packet, packet_len);
+
+ os_free(packet);
+
+ return 0;
+err:
+ wpa_printf(MSG_DEBUG, "FT: Failed to send sequence number request");
+ if (item) {
+ os_free(item->auth);
+ bin_clear_free(item->enc, item->enc_len);
+ os_free(item);
+ }
+
+ return -1;
+}
+
+
+#define FT_RRB_SEQ_OK 0
+#define FT_RRB_SEQ_DROP 1
+#define FT_RRB_SEQ_DEFER 2
+
+static int
+wpa_ft_rrb_seq_chk(struct ft_remote_seq *rkh_seq, const u8 *src_addr,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ const char *msgtype, int no_defer)
+{
+ const u8 *f_seq;
+ size_t f_seq_len;
+ const struct ft_rrb_seq *msg_both;
+ u32 msg_seq, msg_off, rkh_off;
+ struct os_reltime now;
+ unsigned int i;
+
+ RRB_GET_AUTH(FT_RRB_SEQ, seq, msgtype, sizeof(*msg_both));
+ wpa_hexdump(MSG_DEBUG, "FT: sequence number", f_seq, f_seq_len);
+ msg_both = (const struct ft_rrb_seq *) f_seq;
+
+ if (rkh_seq->rx.num_last == 0) {
+ /* first packet from remote */
+ goto defer;
+ }
+
+ if (le_to_host32(msg_both->dom) != rkh_seq->rx.dom) {
+ /* remote might have rebooted */
+ goto defer;
+ }
+
+ if (os_get_reltime(&now) == 0) {
+ u32 msg_ts_now_remote, msg_ts_off;
+ struct os_reltime now_remote;
+
+ os_reltime_sub(&now, &rkh_seq->rx.time_offset, &now_remote);
+ msg_ts_now_remote = now_remote.sec;
+ msg_ts_off = le_to_host32(msg_both->ts) -
+ (msg_ts_now_remote - ftRRBseqTimeout);
+ if (msg_ts_off > 2 * ftRRBseqTimeout)
+ goto defer;
+ }
+
+ msg_seq = le_to_host32(msg_both->seq);
+ rkh_off = rkh_seq->rx.last[rkh_seq->rx.offsetidx];
+ msg_off = msg_seq - rkh_off;
+ if (msg_off > 0xC0000000)
+ goto out; /* too old message, drop it */
+
+ if (msg_off <= 0x40000000) {
+ for (i = 0; i < rkh_seq->rx.num_last; i++) {
+ if (rkh_seq->rx.last[i] == msg_seq)
+ goto out; /* duplicate message, drop it */
+ }
+
+ return FT_RRB_SEQ_OK;
+ }
+
+defer:
+ if (no_defer)
+ goto out;
+
+ wpa_printf(MSG_DEBUG, "FT: Possibly invalid sequence number in %s from "
+ MACSTR, msgtype, MAC2STR(src_addr));
+
+ return FT_RRB_SEQ_DEFER;
+out:
+ wpa_printf(MSG_DEBUG, "FT: Invalid sequence number in %s from " MACSTR,
+ msgtype, MAC2STR(src_addr));
+
+ return FT_RRB_SEQ_DROP;
+}
+
+
+static void
+wpa_ft_rrb_seq_accept(struct wpa_authenticator *wpa_auth,
+ struct ft_remote_seq *rkh_seq, const u8 *src_addr,
+ const u8 *auth, size_t auth_len,
+ const char *msgtype)
+{
+ const u8 *f_seq;
+ size_t f_seq_len;
+ const struct ft_rrb_seq *msg_both;
+ u32 msg_seq, msg_off, min_off, rkh_off;
+ int minidx = 0;
+ unsigned int i;
+
+ RRB_GET_AUTH(FT_RRB_SEQ, seq, msgtype, sizeof(*msg_both));
+ msg_both = (const struct ft_rrb_seq *) f_seq;
+
+ msg_seq = le_to_host32(msg_both->seq);
+
+ if (rkh_seq->rx.num_last < FT_REMOTE_SEQ_BACKLOG) {
+ rkh_seq->rx.last[rkh_seq->rx.num_last] = msg_seq;
+ rkh_seq->rx.num_last++;
+ return;
+ }
+
+ rkh_off = rkh_seq->rx.last[rkh_seq->rx.offsetidx];
+ for (i = 0; i < rkh_seq->rx.num_last; i++) {
+ msg_off = rkh_seq->rx.last[i] - rkh_off;
+ min_off = rkh_seq->rx.last[minidx] - rkh_off;
+ if (msg_off < min_off && i != rkh_seq->rx.offsetidx)
+ minidx = i;
+ }
+ rkh_seq->rx.last[rkh_seq->rx.offsetidx] = msg_seq;
+ rkh_seq->rx.offsetidx = minidx;
+
+ return;
+out:
+ /* RRB_GET_AUTH should never fail here as
+ * wpa_ft_rrb_seq_chk() verified FT_RRB_SEQ presence. */
+ wpa_printf(MSG_ERROR, "FT: %s() failed", __func__);
+}
+
+
+static int wpa_ft_new_seq(struct ft_remote_seq *rkh_seq,
+ struct ft_rrb_seq *f_seq)
+{
+ struct os_reltime now;
+
+ if (os_get_reltime(&now) < 0)
+ return -1;
+
+ if (!rkh_seq->tx.dom) {
+ if (random_get_bytes((u8 *) &rkh_seq->tx.seq,
+ sizeof(rkh_seq->tx.seq))) {
+ wpa_printf(MSG_ERROR,
+ "FT: Failed to get random data for sequence number initialization");
+ rkh_seq->tx.seq = now.usec;
+ }
+ if (random_get_bytes((u8 *) &rkh_seq->tx.dom,
+ sizeof(rkh_seq->tx.dom))) {
+ wpa_printf(MSG_ERROR,
+ "FT: Failed to get random data for sequence number initialization");
+ rkh_seq->tx.dom = now.usec;
+ }
+ rkh_seq->tx.dom |= 1;
+ }
+
+ f_seq->dom = host_to_le32(rkh_seq->tx.dom);
+ f_seq->seq = host_to_le32(rkh_seq->tx.seq);
+ f_seq->ts = host_to_le32(now.sec);
+
+ rkh_seq->tx.seq++;
+
+ return 0;
+}
+
+
+struct wpa_ft_pmk_r0_sa {
+ struct dl_list list;
+ u8 pmk_r0[PMK_LEN_MAX];
+ size_t pmk_r0_len;
+ u8 pmk_r0_name[WPA_PMK_NAME_LEN];
+ u8 spa[ETH_ALEN];
+ int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */
+ struct vlan_description *vlan;
+ os_time_t expiration; /* 0 for no expiration */
+ u8 *identity;
+ size_t identity_len;
+ u8 *radius_cui;
+ size_t radius_cui_len;
+ os_time_t session_timeout; /* 0 for no expiration */
+ /* TODO: radius_class, EAP type */
+ int pmk_r1_pushed;
+};
+
+struct wpa_ft_pmk_r1_sa {
+ struct dl_list list;
+ u8 pmk_r1[PMK_LEN_MAX];
+ size_t pmk_r1_len;
+ u8 pmk_r1_name[WPA_PMK_NAME_LEN];
+ u8 spa[ETH_ALEN];
+ int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */
+ struct vlan_description *vlan;
+ u8 *identity;
+ size_t identity_len;
+ u8 *radius_cui;
+ size_t radius_cui_len;
+ os_time_t session_timeout; /* 0 for no expiration */
+ /* TODO: radius_class, EAP type */
+};
+
+struct wpa_ft_pmk_cache {
+ struct dl_list pmk_r0; /* struct wpa_ft_pmk_r0_sa */
+ struct dl_list pmk_r1; /* struct wpa_ft_pmk_r1_sa */
+};
+
+
+static void wpa_ft_expire_pmk_r0(void *eloop_ctx, void *timeout_ctx);
+static void wpa_ft_expire_pmk_r1(void *eloop_ctx, void *timeout_ctx);
+
+
+static void wpa_ft_free_pmk_r0(struct wpa_ft_pmk_r0_sa *r0)
+{
+ if (!r0)
+ return;
+
+ dl_list_del(&r0->list);
+ eloop_cancel_timeout(wpa_ft_expire_pmk_r0, r0, NULL);
+
+ os_memset(r0->pmk_r0, 0, PMK_LEN_MAX);
+ os_free(r0->vlan);
+ os_free(r0->identity);
+ os_free(r0->radius_cui);
+ os_free(r0);
+}
+
+
+static void wpa_ft_expire_pmk_r0(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_ft_pmk_r0_sa *r0 = eloop_ctx;
+ struct os_reltime now;
+ int expires_in;
+ int session_timeout;
+
+ os_get_reltime(&now);
+
+ if (!r0)
+ return;
+
+ expires_in = r0->expiration - now.sec;
+ session_timeout = r0->session_timeout - now.sec;
+ /* conditions to remove from cache:
+ * a) r0->expiration is set and hit
+ * -or-
+ * b) r0->session_timeout is set and hit
+ */
+ if ((!r0->expiration || expires_in > 0) &&
+ (!r0->session_timeout || session_timeout > 0)) {
+ wpa_printf(MSG_ERROR,
+ "FT: %s() called for non-expired entry %p",
+ __func__, r0);
+ eloop_cancel_timeout(wpa_ft_expire_pmk_r0, r0, NULL);
+ if (r0->expiration && expires_in > 0)
+ eloop_register_timeout(expires_in + 1, 0,
+ wpa_ft_expire_pmk_r0, r0, NULL);
+ if (r0->session_timeout && session_timeout > 0)
+ eloop_register_timeout(session_timeout + 1, 0,
+ wpa_ft_expire_pmk_r0, r0, NULL);
+ return;
+ }
+
+ wpa_ft_free_pmk_r0(r0);
+}
+
+
+static void wpa_ft_free_pmk_r1(struct wpa_ft_pmk_r1_sa *r1)
+{
+ if (!r1)
+ return;
+
+ dl_list_del(&r1->list);
+ eloop_cancel_timeout(wpa_ft_expire_pmk_r1, r1, NULL);
+
+ os_memset(r1->pmk_r1, 0, PMK_LEN_MAX);
+ os_free(r1->vlan);
+ os_free(r1->identity);
+ os_free(r1->radius_cui);
+ os_free(r1);
+}
+
+
+static void wpa_ft_expire_pmk_r1(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_ft_pmk_r1_sa *r1 = eloop_ctx;
+
+ wpa_ft_free_pmk_r1(r1);
+}
+
+
+struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void)
+{
+ struct wpa_ft_pmk_cache *cache;
+
+ cache = os_zalloc(sizeof(*cache));
+ if (cache) {
+ dl_list_init(&cache->pmk_r0);
+ dl_list_init(&cache->pmk_r1);
+ }
+
+ return cache;
+}
+
+
+void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache)
+{
+ struct wpa_ft_pmk_r0_sa *r0, *r0prev;
+ struct wpa_ft_pmk_r1_sa *r1, *r1prev;
+
+ dl_list_for_each_safe(r0, r0prev, &cache->pmk_r0,
+ struct wpa_ft_pmk_r0_sa, list)
+ wpa_ft_free_pmk_r0(r0);
+
+ dl_list_for_each_safe(r1, r1prev, &cache->pmk_r1,
+ struct wpa_ft_pmk_r1_sa, list)
+ wpa_ft_free_pmk_r1(r1);
+
+ os_free(cache);
+}
+
+
+static int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth,
+ const u8 *spa, const u8 *pmk_r0,
+ size_t pmk_r0_len,
+ const u8 *pmk_r0_name, int pairwise,
+ const struct vlan_description *vlan,
+ int expires_in, int session_timeout,
+ const u8 *identity, size_t identity_len,
+ const u8 *radius_cui, size_t radius_cui_len)
+{
+ struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
+ struct wpa_ft_pmk_r0_sa *r0;
+ struct os_reltime now;
+
+ /* TODO: add limit on number of entries in cache */
+ os_get_reltime(&now);
+
+ r0 = os_zalloc(sizeof(*r0));
+ if (r0 == NULL)
+ return -1;
+
+ os_memcpy(r0->pmk_r0, pmk_r0, pmk_r0_len);
+ r0->pmk_r0_len = pmk_r0_len;
+ os_memcpy(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN);
+ os_memcpy(r0->spa, spa, ETH_ALEN);
+ r0->pairwise = pairwise;
+ if (expires_in > 0)
+ r0->expiration = now.sec + expires_in;
+ if (vlan && vlan->notempty) {
+ r0->vlan = os_zalloc(sizeof(*vlan));
+ if (!r0->vlan) {
+ bin_clear_free(r0, sizeof(*r0));
+ return -1;
+ }
+ *r0->vlan = *vlan;
+ }
+ if (identity) {
+ r0->identity = os_malloc(identity_len);
+ if (r0->identity) {
+ os_memcpy(r0->identity, identity, identity_len);
+ r0->identity_len = identity_len;
+ }
+ }
+ if (radius_cui) {
+ r0->radius_cui = os_malloc(radius_cui_len);
+ if (r0->radius_cui) {
+ os_memcpy(r0->radius_cui, radius_cui, radius_cui_len);
+ r0->radius_cui_len = radius_cui_len;
+ }
+ }
+ if (session_timeout > 0)
+ r0->session_timeout = now.sec + session_timeout;
+
+ dl_list_add(&cache->pmk_r0, &r0->list);
+ if (expires_in > 0)
+ eloop_register_timeout(expires_in + 1, 0, wpa_ft_expire_pmk_r0,
+ r0, NULL);
+ if (session_timeout > 0)
+ eloop_register_timeout(session_timeout + 1, 0,
+ wpa_ft_expire_pmk_r0, r0, NULL);
+
+ return 0;
+}
+
+
+static int wpa_ft_fetch_pmk_r0(struct wpa_authenticator *wpa_auth,
+ const u8 *spa, const u8 *pmk_r0_name,
+ const struct wpa_ft_pmk_r0_sa **r0_out)
+{
+ struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
+ struct wpa_ft_pmk_r0_sa *r0;
+ struct os_reltime now;
+
+ os_get_reltime(&now);
+ dl_list_for_each(r0, &cache->pmk_r0, struct wpa_ft_pmk_r0_sa, list) {
+ if (os_memcmp(r0->spa, spa, ETH_ALEN) == 0 &&
+ os_memcmp_const(r0->pmk_r0_name, pmk_r0_name,
+ WPA_PMK_NAME_LEN) == 0) {
+ *r0_out = r0;
+ return 0;
+ }
+ }
+
+ *r0_out = NULL;
+ return -1;
+}
+
+
+static int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth,
+ const u8 *spa, const u8 *pmk_r1,
+ size_t pmk_r1_len,
+ const u8 *pmk_r1_name, int pairwise,
+ const struct vlan_description *vlan,
+ int expires_in, int session_timeout,
+ const u8 *identity, size_t identity_len,
+ const u8 *radius_cui, size_t radius_cui_len)
+{
+ struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
+ int max_expires_in = wpa_auth->conf.r1_max_key_lifetime;
+ struct wpa_ft_pmk_r1_sa *r1;
+ struct os_reltime now;
+
+ /* TODO: limit on number of entries in cache */
+ os_get_reltime(&now);
+
+ if (max_expires_in && (max_expires_in < expires_in || expires_in == 0))
+ expires_in = max_expires_in;
+
+ r1 = os_zalloc(sizeof(*r1));
+ if (r1 == NULL)
+ return -1;
+
+ os_memcpy(r1->pmk_r1, pmk_r1, pmk_r1_len);
+ r1->pmk_r1_len = pmk_r1_len;
+ os_memcpy(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN);
+ os_memcpy(r1->spa, spa, ETH_ALEN);
+ r1->pairwise = pairwise;
+ if (vlan && vlan->notempty) {
+ r1->vlan = os_zalloc(sizeof(*vlan));
+ if (!r1->vlan) {
+ bin_clear_free(r1, sizeof(*r1));
+ return -1;
+ }
+ *r1->vlan = *vlan;
+ }
+ if (identity) {
+ r1->identity = os_malloc(identity_len);
+ if (r1->identity) {
+ os_memcpy(r1->identity, identity, identity_len);
+ r1->identity_len = identity_len;
+ }
+ }
+ if (radius_cui) {
+ r1->radius_cui = os_malloc(radius_cui_len);
+ if (r1->radius_cui) {
+ os_memcpy(r1->radius_cui, radius_cui, radius_cui_len);
+ r1->radius_cui_len = radius_cui_len;
+ }
+ }
+ if (session_timeout > 0)
+ r1->session_timeout = now.sec + session_timeout;
+
+ dl_list_add(&cache->pmk_r1, &r1->list);
+
+ if (expires_in > 0)
+ eloop_register_timeout(expires_in + 1, 0, wpa_ft_expire_pmk_r1,
+ r1, NULL);
+ if (session_timeout > 0)
+ eloop_register_timeout(session_timeout + 1, 0,
+ wpa_ft_expire_pmk_r1, r1, NULL);
+
+ return 0;
+}
+
+
+static int wpa_ft_fetch_pmk_r1(struct wpa_authenticator *wpa_auth,
+ const u8 *spa, const u8 *pmk_r1_name,
+ u8 *pmk_r1, size_t *pmk_r1_len, int *pairwise,
+ struct vlan_description *vlan,
+ const u8 **identity, size_t *identity_len,
+ const u8 **radius_cui, size_t *radius_cui_len,
+ int *session_timeout)
+{
+ struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
+ struct wpa_ft_pmk_r1_sa *r1;
+ struct os_reltime now;
+
+ os_get_reltime(&now);
+
+ dl_list_for_each(r1, &cache->pmk_r1, struct wpa_ft_pmk_r1_sa, list) {
+ if (os_memcmp(r1->spa, spa, ETH_ALEN) == 0 &&
+ os_memcmp_const(r1->pmk_r1_name, pmk_r1_name,
+ WPA_PMK_NAME_LEN) == 0) {
+ os_memcpy(pmk_r1, r1->pmk_r1, r1->pmk_r1_len);
+ *pmk_r1_len = r1->pmk_r1_len;
+ if (pairwise)
+ *pairwise = r1->pairwise;
+ if (vlan && r1->vlan)
+ *vlan = *r1->vlan;
+ if (vlan && !r1->vlan)
+ os_memset(vlan, 0, sizeof(*vlan));
+ if (identity && identity_len) {
+ *identity = r1->identity;
+ *identity_len = r1->identity_len;
+ }
+ if (radius_cui && radius_cui_len) {
+ *radius_cui = r1->radius_cui;
+ *radius_cui_len = r1->radius_cui_len;
+ }
+ if (session_timeout && r1->session_timeout > now.sec)
+ *session_timeout = r1->session_timeout -
+ now.sec;
+ else if (session_timeout && r1->session_timeout)
+ *session_timeout = 1;
+ else if (session_timeout)
+ *session_timeout = 0;
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+
+static int wpa_ft_rrb_init_r0kh_seq(struct ft_remote_r0kh *r0kh)
+{
+ if (r0kh->seq)
+ return 0;
+
+ r0kh->seq = os_zalloc(sizeof(*r0kh->seq));
+ if (!r0kh->seq) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to allocate r0kh->seq");
+ return -1;
+ }
+
+ dl_list_init(&r0kh->seq->rx.queue);
+
+ return 0;
+}
+
+
+static void wpa_ft_rrb_lookup_r0kh(struct wpa_authenticator *wpa_auth,
+ const u8 *f_r0kh_id, size_t f_r0kh_id_len,
+ struct ft_remote_r0kh **r0kh_out,
+ struct ft_remote_r0kh **r0kh_wildcard)
+{
+ struct ft_remote_r0kh *r0kh;
+
+ *r0kh_wildcard = NULL;
+ *r0kh_out = NULL;
+
+ if (wpa_auth->conf.r0kh_list)
+ r0kh = *wpa_auth->conf.r0kh_list;
+ else
+ r0kh = NULL;
+ for (; r0kh; r0kh = r0kh->next) {
+ if (r0kh->id_len == 1 && r0kh->id[0] == '*')
+ *r0kh_wildcard = r0kh;
+ if (f_r0kh_id && r0kh->id_len == f_r0kh_id_len &&
+ os_memcmp_const(f_r0kh_id, r0kh->id, f_r0kh_id_len) == 0)
+ *r0kh_out = r0kh;
+ }
+
+ if (!*r0kh_out && !*r0kh_wildcard)
+ wpa_printf(MSG_DEBUG, "FT: No matching R0KH found");
+
+ if (*r0kh_out && wpa_ft_rrb_init_r0kh_seq(*r0kh_out) < 0)
+ *r0kh_out = NULL;
+}
+
+
+static int wpa_ft_rrb_init_r1kh_seq(struct ft_remote_r1kh *r1kh)
+{
+ if (r1kh->seq)
+ return 0;
+
+ r1kh->seq = os_zalloc(sizeof(*r1kh->seq));
+ if (!r1kh->seq) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to allocate r1kh->seq");
+ return -1;
+ }
+
+ dl_list_init(&r1kh->seq->rx.queue);
+
+ return 0;
+}
+
+
+static void wpa_ft_rrb_lookup_r1kh(struct wpa_authenticator *wpa_auth,
+ const u8 *f_r1kh_id,
+ struct ft_remote_r1kh **r1kh_out,
+ struct ft_remote_r1kh **r1kh_wildcard)
+{
+ struct ft_remote_r1kh *r1kh;
+
+ *r1kh_wildcard = NULL;
+ *r1kh_out = NULL;
+
+ if (wpa_auth->conf.r1kh_list)
+ r1kh = *wpa_auth->conf.r1kh_list;
+ else
+ r1kh = NULL;
+ for (; r1kh; r1kh = r1kh->next) {
+ if (is_zero_ether_addr(r1kh->addr) &&
+ is_zero_ether_addr(r1kh->id))
+ *r1kh_wildcard = r1kh;
+ if (f_r1kh_id &&
+ os_memcmp_const(r1kh->id, f_r1kh_id, FT_R1KH_ID_LEN) == 0)
+ *r1kh_out = r1kh;
+ }
+
+ if (!*r1kh_out && !*r1kh_wildcard)
+ wpa_printf(MSG_DEBUG, "FT: No matching R1KH found");
+
+ if (*r1kh_out && wpa_ft_rrb_init_r1kh_seq(*r1kh_out) < 0)
+ *r1kh_out = NULL;
+}
+
+
+static int wpa_ft_rrb_check_r0kh(struct wpa_authenticator *wpa_auth,
+ const u8 *f_r0kh_id, size_t f_r0kh_id_len)
+{
+ if (f_r0kh_id_len != wpa_auth->conf.r0_key_holder_len ||
+ os_memcmp_const(f_r0kh_id, wpa_auth->conf.r0_key_holder,
+ f_r0kh_id_len) != 0)
+ return -1;
+
+ return 0;
+}
+
+
+static int wpa_ft_rrb_check_r1kh(struct wpa_authenticator *wpa_auth,
+ const u8 *f_r1kh_id)
+{
+ if (os_memcmp_const(f_r1kh_id, wpa_auth->conf.r1_key_holder,
+ FT_R1KH_ID_LEN) != 0)
+ return -1;
+
+ return 0;
+}
+
+
+static void wpa_ft_rrb_del_r0kh(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_authenticator *wpa_auth = eloop_ctx;
+ struct ft_remote_r0kh *r0kh, *prev = NULL;
+
+ if (!wpa_auth->conf.r0kh_list)
+ return;
+
+ for (r0kh = *wpa_auth->conf.r0kh_list; r0kh; r0kh = r0kh->next) {
+ if (r0kh == timeout_ctx)
+ break;
+ prev = r0kh;
+ }
+ if (!r0kh)
+ return;
+ if (prev)
+ prev->next = r0kh->next;
+ else
+ *wpa_auth->conf.r0kh_list = r0kh->next;
+ if (r0kh->seq)
+ wpa_ft_rrb_seq_flush(wpa_auth, r0kh->seq, 0);
+ os_free(r0kh->seq);
+ os_free(r0kh);
+}
+
+
+static void wpa_ft_rrb_r0kh_replenish(struct wpa_authenticator *wpa_auth,
+ struct ft_remote_r0kh *r0kh, int timeout)
+{
+ if (timeout > 0)
+ eloop_replenish_timeout(timeout, 0, wpa_ft_rrb_del_r0kh,
+ wpa_auth, r0kh);
+}
+
+
+static void wpa_ft_rrb_r0kh_timeout(struct wpa_authenticator *wpa_auth,
+ struct ft_remote_r0kh *r0kh, int timeout)
+{
+ eloop_cancel_timeout(wpa_ft_rrb_del_r0kh, wpa_auth, r0kh);
+
+ if (timeout > 0)
+ eloop_register_timeout(timeout, 0, wpa_ft_rrb_del_r0kh,
+ wpa_auth, r0kh);
+}
+
+
+static struct ft_remote_r0kh *
+wpa_ft_rrb_add_r0kh(struct wpa_authenticator *wpa_auth,
+ struct ft_remote_r0kh *r0kh_wildcard,
+ const u8 *src_addr, const u8 *r0kh_id, size_t id_len,
+ int timeout)
+{
+ struct ft_remote_r0kh *r0kh;
+
+ if (!wpa_auth->conf.r0kh_list)
+ return NULL;
+
+ r0kh = os_zalloc(sizeof(*r0kh));
+ if (!r0kh)
+ return NULL;
+
+ if (src_addr)
+ os_memcpy(r0kh->addr, src_addr, sizeof(r0kh->addr));
+
+ if (id_len > FT_R0KH_ID_MAX_LEN)
+ id_len = FT_R0KH_ID_MAX_LEN;
+ os_memcpy(r0kh->id, r0kh_id, id_len);
+ r0kh->id_len = id_len;
+
+ os_memcpy(r0kh->key, r0kh_wildcard->key, sizeof(r0kh->key));
-struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void)
-{
- struct wpa_ft_pmk_cache *cache;
+ r0kh->next = *wpa_auth->conf.r0kh_list;
+ *wpa_auth->conf.r0kh_list = r0kh;
- cache = os_zalloc(sizeof(*cache));
+ if (timeout > 0)
+ eloop_register_timeout(timeout, 0, wpa_ft_rrb_del_r0kh,
+ wpa_auth, r0kh);
- return cache;
+ if (wpa_ft_rrb_init_r0kh_seq(r0kh) < 0)
+ return NULL;
+
+ return r0kh;
}
-void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache)
+static void wpa_ft_rrb_del_r1kh(void *eloop_ctx, void *timeout_ctx)
{
- struct wpa_ft_pmk_r0_sa *r0, *r0prev;
- struct wpa_ft_pmk_r1_sa *r1, *r1prev;
+ struct wpa_authenticator *wpa_auth = eloop_ctx;
+ struct ft_remote_r1kh *r1kh, *prev = NULL;
- r0 = cache->pmk_r0;
- while (r0) {
- r0prev = r0;
- r0 = r0->next;
- os_memset(r0prev->pmk_r0, 0, PMK_LEN);
- os_free(r0prev);
- }
+ if (!wpa_auth->conf.r1kh_list)
+ return;
- r1 = cache->pmk_r1;
- while (r1) {
- r1prev = r1;
- r1 = r1->next;
- os_memset(r1prev->pmk_r1, 0, PMK_LEN);
- os_free(r1prev);
+ for (r1kh = *wpa_auth->conf.r1kh_list; r1kh; r1kh = r1kh->next) {
+ if (r1kh == timeout_ctx)
+ break;
+ prev = r1kh;
}
+ if (!r1kh)
+ return;
+ if (prev)
+ prev->next = r1kh->next;
+ else
+ *wpa_auth->conf.r1kh_list = r1kh->next;
+ if (r1kh->seq)
+ wpa_ft_rrb_seq_flush(wpa_auth, r1kh->seq, 0);
+ os_free(r1kh->seq);
+ os_free(r1kh);
+}
- os_free(cache);
+
+static void wpa_ft_rrb_r1kh_replenish(struct wpa_authenticator *wpa_auth,
+ struct ft_remote_r1kh *r1kh, int timeout)
+{
+ if (timeout > 0)
+ eloop_replenish_timeout(timeout, 0, wpa_ft_rrb_del_r1kh,
+ wpa_auth, r1kh);
}
-static int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth,
- const u8 *spa, const u8 *pmk_r0,
- const u8 *pmk_r0_name, int pairwise)
+static struct ft_remote_r1kh *
+wpa_ft_rrb_add_r1kh(struct wpa_authenticator *wpa_auth,
+ struct ft_remote_r1kh *r1kh_wildcard,
+ const u8 *src_addr, const u8 *r1kh_id, int timeout)
{
- struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
- struct wpa_ft_pmk_r0_sa *r0;
+ struct ft_remote_r1kh *r1kh;
- /* TODO: add expiration and limit on number of entries in cache */
+ if (!wpa_auth->conf.r1kh_list)
+ return NULL;
- r0 = os_zalloc(sizeof(*r0));
- if (r0 == NULL)
- return -1;
+ r1kh = os_zalloc(sizeof(*r1kh));
+ if (!r1kh)
+ return NULL;
- os_memcpy(r0->pmk_r0, pmk_r0, PMK_LEN);
- os_memcpy(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN);
- os_memcpy(r0->spa, spa, ETH_ALEN);
- r0->pairwise = pairwise;
+ os_memcpy(r1kh->addr, src_addr, sizeof(r1kh->addr));
+ os_memcpy(r1kh->id, r1kh_id, sizeof(r1kh->id));
+ os_memcpy(r1kh->key, r1kh_wildcard->key, sizeof(r1kh->key));
+ r1kh->next = *wpa_auth->conf.r1kh_list;
+ *wpa_auth->conf.r1kh_list = r1kh;
- r0->next = cache->pmk_r0;
- cache->pmk_r0 = r0;
+ if (timeout > 0)
+ eloop_register_timeout(timeout, 0, wpa_ft_rrb_del_r1kh,
+ wpa_auth, r1kh);
- return 0;
+ if (wpa_ft_rrb_init_r1kh_seq(r1kh) < 0)
+ return NULL;
+
+ return r1kh;
}
-static int wpa_ft_fetch_pmk_r0(struct wpa_authenticator *wpa_auth,
- const u8 *spa, const u8 *pmk_r0_name,
- u8 *pmk_r0, int *pairwise)
+void wpa_ft_sta_deinit(struct wpa_state_machine *sm)
{
- struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
- struct wpa_ft_pmk_r0_sa *r0;
+ eloop_cancel_timeout(wpa_ft_expire_pull, sm, NULL);
+}
- r0 = cache->pmk_r0;
- while (r0) {
- if (os_memcmp(r0->spa, spa, ETH_ALEN) == 0 &&
- os_memcmp_const(r0->pmk_r0_name, pmk_r0_name,
- WPA_PMK_NAME_LEN) == 0) {
- os_memcpy(pmk_r0, r0->pmk_r0, PMK_LEN);
- if (pairwise)
- *pairwise = r0->pairwise;
- return 0;
- }
- r0 = r0->next;
+static void wpa_ft_deinit_seq(struct wpa_authenticator *wpa_auth)
+{
+ struct ft_remote_r0kh *r0kh;
+ struct ft_remote_r1kh *r1kh;
+
+ eloop_cancel_timeout(wpa_ft_rrb_seq_timeout, wpa_auth, ELOOP_ALL_CTX);
+
+ if (wpa_auth->conf.r0kh_list)
+ r0kh = *wpa_auth->conf.r0kh_list;
+ else
+ r0kh = NULL;
+ for (; r0kh; r0kh = r0kh->next) {
+ if (!r0kh->seq)
+ continue;
+ wpa_ft_rrb_seq_flush(wpa_auth, r0kh->seq, 0);
+ os_free(r0kh->seq);
+ r0kh->seq = NULL;
}
- return -1;
+ if (wpa_auth->conf.r1kh_list)
+ r1kh = *wpa_auth->conf.r1kh_list;
+ else
+ r1kh = NULL;
+ for (; r1kh; r1kh = r1kh->next) {
+ if (!r1kh->seq)
+ continue;
+ wpa_ft_rrb_seq_flush(wpa_auth, r1kh->seq, 0);
+ os_free(r1kh->seq);
+ r1kh->seq = NULL;
+ }
}
-static int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth,
- const u8 *spa, const u8 *pmk_r1,
- const u8 *pmk_r1_name, int pairwise)
+static void wpa_ft_deinit_rkh_tmp(struct wpa_authenticator *wpa_auth)
{
- struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
- struct wpa_ft_pmk_r1_sa *r1;
+ struct ft_remote_r0kh *r0kh, *r0kh_next, *r0kh_prev = NULL;
+ struct ft_remote_r1kh *r1kh, *r1kh_next, *r1kh_prev = NULL;
- /* TODO: add expiration and limit on number of entries in cache */
-
- r1 = os_zalloc(sizeof(*r1));
- if (r1 == NULL)
- return -1;
+ if (wpa_auth->conf.r0kh_list)
+ r0kh = *wpa_auth->conf.r0kh_list;
+ else
+ r0kh = NULL;
+ while (r0kh) {
+ r0kh_next = r0kh->next;
+ if (eloop_cancel_timeout(wpa_ft_rrb_del_r0kh, wpa_auth,
+ r0kh) > 0) {
+ if (r0kh_prev)
+ r0kh_prev->next = r0kh_next;
+ else
+ *wpa_auth->conf.r0kh_list = r0kh_next;
+ os_free(r0kh);
+ } else {
+ r0kh_prev = r0kh;
+ }
+ r0kh = r0kh_next;
+ }
- os_memcpy(r1->pmk_r1, pmk_r1, PMK_LEN);
- os_memcpy(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN);
- os_memcpy(r1->spa, spa, ETH_ALEN);
- r1->pairwise = pairwise;
+ if (wpa_auth->conf.r1kh_list)
+ r1kh = *wpa_auth->conf.r1kh_list;
+ else
+ r1kh = NULL;
+ while (r1kh) {
+ r1kh_next = r1kh->next;
+ if (eloop_cancel_timeout(wpa_ft_rrb_del_r1kh, wpa_auth,
+ r1kh) > 0) {
+ if (r1kh_prev)
+ r1kh_prev->next = r1kh_next;
+ else
+ *wpa_auth->conf.r1kh_list = r1kh_next;
+ os_free(r1kh);
+ } else {
+ r1kh_prev = r1kh;
+ }
+ r1kh = r1kh_next;
+ }
+}
- r1->next = cache->pmk_r1;
- cache->pmk_r1 = r1;
- return 0;
+void wpa_ft_deinit(struct wpa_authenticator *wpa_auth)
+{
+ wpa_ft_deinit_seq(wpa_auth);
+ wpa_ft_deinit_rkh_tmp(wpa_auth);
}
-static int wpa_ft_fetch_pmk_r1(struct wpa_authenticator *wpa_auth,
- const u8 *spa, const u8 *pmk_r1_name,
- u8 *pmk_r1, int *pairwise)
+static void wpa_ft_block_r0kh(struct wpa_authenticator *wpa_auth,
+ const u8 *f_r0kh_id, size_t f_r0kh_id_len)
{
- struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
- struct wpa_ft_pmk_r1_sa *r1;
+ struct ft_remote_r0kh *r0kh, *r0kh_wildcard;
- r1 = cache->pmk_r1;
- while (r1) {
- if (os_memcmp(r1->spa, spa, ETH_ALEN) == 0 &&
- os_memcmp_const(r1->pmk_r1_name, pmk_r1_name,
- WPA_PMK_NAME_LEN) == 0) {
- os_memcpy(pmk_r1, r1->pmk_r1, PMK_LEN);
- if (pairwise)
- *pairwise = r1->pairwise;
- return 0;
- }
+ if (!wpa_auth->conf.rkh_neg_timeout)
+ return;
- r1 = r1->next;
+ wpa_ft_rrb_lookup_r0kh(wpa_auth, f_r0kh_id, f_r0kh_id_len,
+ &r0kh, &r0kh_wildcard);
+
+ if (!r0kh_wildcard) {
+ /* r0kh removed after neg_timeout and might need re-adding */
+ return;
}
- return -1;
+ wpa_hexdump(MSG_DEBUG, "FT: Blacklist R0KH-ID",
+ f_r0kh_id, f_r0kh_id_len);
+
+ if (r0kh) {
+ wpa_ft_rrb_r0kh_timeout(wpa_auth, r0kh,
+ wpa_auth->conf.rkh_neg_timeout);
+ os_memset(r0kh->addr, 0, ETH_ALEN);
+ } else
+ wpa_ft_rrb_add_r0kh(wpa_auth, r0kh_wildcard, NULL, f_r0kh_id,
+ f_r0kh_id_len,
+ wpa_auth->conf.rkh_neg_timeout);
+}
+
+
+static void wpa_ft_expire_pull(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_state_machine *sm = eloop_ctx;
+
+ wpa_printf(MSG_DEBUG, "FT: Timeout pending pull request for " MACSTR,
+ MAC2STR(sm->addr));
+ if (sm->ft_pending_pull_left_retries <= 0)
+ wpa_ft_block_r0kh(sm->wpa_auth, sm->r0kh_id, sm->r0kh_id_len);
+
+ /* cancel multiple timeouts */
+ eloop_cancel_timeout(wpa_ft_expire_pull, sm, NULL);
+ ft_finish_pull(sm);
}
const u8 *ies, size_t ies_len,
const u8 *pmk_r0_name)
{
- struct ft_remote_r0kh *r0kh;
- struct ft_r0kh_r1kh_pull_frame frame, f;
-
- r0kh = sm->wpa_auth->conf.r0kh_list;
- while (r0kh) {
- if (r0kh->id_len == sm->r0kh_id_len &&
- os_memcmp_const(r0kh->id, sm->r0kh_id, sm->r0kh_id_len) ==
- 0)
- break;
- r0kh = r0kh->next;
+ struct ft_remote_r0kh *r0kh, *r0kh_wildcard;
+ u8 *packet = NULL;
+ const u8 *key, *f_r1kh_id = sm->wpa_auth->conf.r1_key_holder;
+ size_t packet_len, key_len;
+ struct ft_rrb_seq f_seq;
+ int tsecs, tusecs, first;
+ struct wpabuf *ft_pending_req_ies;
+ int r0kh_timeout;
+ struct tlv_list req_enc[] = {
+ { .type = FT_RRB_PMK_R0_NAME, .len = WPA_PMK_NAME_LEN,
+ .data = pmk_r0_name },
+ { .type = FT_RRB_S1KH_ID, .len = ETH_ALEN,
+ .data = sm->addr },
+ { .type = FT_RRB_LAST_EMPTY, .len = 0, .data = NULL },
+ };
+ struct tlv_list req_auth[] = {
+ { .type = FT_RRB_NONCE, .len = FT_RRB_NONCE_LEN,
+ .data = sm->ft_pending_pull_nonce },
+ { .type = FT_RRB_SEQ, .len = sizeof(f_seq),
+ .data = (u8 *) &f_seq },
+ { .type = FT_RRB_R0KH_ID, .len = sm->r0kh_id_len,
+ .data = sm->r0kh_id },
+ { .type = FT_RRB_R1KH_ID, .len = FT_R1KH_ID_LEN,
+ .data = f_r1kh_id },
+ { .type = FT_RRB_LAST_EMPTY, .len = 0, .data = NULL },
+ };
+
+ if (sm->ft_pending_pull_left_retries <= 0)
+ return -1;
+ first = sm->ft_pending_pull_left_retries ==
+ sm->wpa_auth->conf.rkh_pull_retries;
+ sm->ft_pending_pull_left_retries--;
+
+ wpa_ft_rrb_lookup_r0kh(sm->wpa_auth, sm->r0kh_id, sm->r0kh_id_len,
+ &r0kh, &r0kh_wildcard);
+
+ /* Keep r0kh sufficiently long in the list for seq num check */
+ r0kh_timeout = sm->wpa_auth->conf.rkh_pull_timeout / 1000 +
+ 1 + ftRRBseqTimeout;
+ if (r0kh) {
+ wpa_ft_rrb_r0kh_replenish(sm->wpa_auth, r0kh, r0kh_timeout);
+ } else if (r0kh_wildcard) {
+ wpa_printf(MSG_DEBUG, "FT: Using wildcard R0KH-ID");
+ /* r0kh->addr: updated by SEQ_RESP and wpa_ft_expire_pull */
+ r0kh = wpa_ft_rrb_add_r0kh(sm->wpa_auth, r0kh_wildcard,
+ r0kh_wildcard->addr,
+ sm->r0kh_id, sm->r0kh_id_len,
+ r0kh_timeout);
}
if (r0kh == NULL) {
wpa_hexdump(MSG_DEBUG, "FT: Did not find R0KH-ID",
sm->r0kh_id, sm->r0kh_id_len);
return -1;
}
+ if (is_zero_ether_addr(r0kh->addr)) {
+ wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID is blacklisted",
+ sm->r0kh_id, sm->r0kh_id_len);
+ return -1;
+ }
+ if (os_memcmp(r0kh->addr, sm->wpa_auth->addr, ETH_ALEN) == 0) {
+ wpa_printf(MSG_DEBUG,
+ "FT: R0KH-ID points to self - no matching key available");
+ return -1;
+ }
+
+ key = r0kh->key;
+ key_len = sizeof(r0kh->key);
- wpa_printf(MSG_DEBUG, "FT: Send PMK-R1 pull request to remote R0KH "
- "address " MACSTR, MAC2STR(r0kh->addr));
+ if (r0kh->seq->rx.num_last == 0) {
+ /* A sequence request will be sent out anyway when pull
+ * response is received. Send it out now to avoid one RTT. */
+ wpa_ft_rrb_seq_req(sm->wpa_auth, r0kh->seq, r0kh->addr,
+ r0kh->id, r0kh->id_len, f_r1kh_id, key,
+ key_len, NULL, 0, NULL, 0, NULL);
+ }
- os_memset(&frame, 0, sizeof(frame));
- frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
- frame.packet_type = FT_PACKET_R0KH_R1KH_PULL;
- frame.data_length = host_to_le16(FT_R0KH_R1KH_PULL_DATA_LEN);
- os_memcpy(frame.ap_address, sm->wpa_auth->addr, ETH_ALEN);
+ wpa_printf(MSG_DEBUG, "FT: Send PMK-R1 pull request from " MACSTR
+ " to remote R0KH address " MACSTR,
+ MAC2STR(sm->wpa_auth->addr), MAC2STR(r0kh->addr));
- /* aes_wrap() does not support inplace encryption, so use a temporary
- * buffer for the data. */
- if (random_get_bytes(f.nonce, FT_R0KH_R1KH_PULL_NONCE_LEN)) {
+ if (first &&
+ random_get_bytes(sm->ft_pending_pull_nonce, FT_RRB_NONCE_LEN) < 0) {
wpa_printf(MSG_DEBUG, "FT: Failed to get random data for "
"nonce");
return -1;
}
- os_memcpy(sm->ft_pending_pull_nonce, f.nonce,
- FT_R0KH_R1KH_PULL_NONCE_LEN);
- os_memcpy(f.pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN);
- os_memcpy(f.r1kh_id, sm->wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN);
- os_memcpy(f.s1kh_id, sm->addr, ETH_ALEN);
- os_memset(f.pad, 0, sizeof(f.pad));
- if (aes_wrap(r0kh->key, sizeof(r0kh->key),
- (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8,
- f.nonce, frame.nonce) < 0)
+ if (wpa_ft_new_seq(r0kh->seq, &f_seq) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to get seq num");
+ return -1;
+ }
+
+ if (wpa_ft_rrb_build(key, key_len, req_enc, NULL, req_auth, NULL,
+ sm->wpa_auth->addr, FT_PACKET_R0KH_R1KH_PULL,
+ &packet, &packet_len) < 0)
return -1;
+ ft_pending_req_ies = wpabuf_alloc_copy(ies, ies_len);
wpabuf_free(sm->ft_pending_req_ies);
- sm->ft_pending_req_ies = wpabuf_alloc_copy(ies, ies_len);
- if (sm->ft_pending_req_ies == NULL)
+ sm->ft_pending_req_ies = ft_pending_req_ies;
+ if (!sm->ft_pending_req_ies) {
+ os_free(packet);
return -1;
+ }
+
+ tsecs = sm->wpa_auth->conf.rkh_pull_timeout / 1000;
+ tusecs = (sm->wpa_auth->conf.rkh_pull_timeout % 1000) * 1000;
+ eloop_register_timeout(tsecs, tusecs, wpa_ft_expire_pull, sm, NULL);
- wpa_ft_rrb_send(sm->wpa_auth, r0kh->addr, (u8 *) &frame, sizeof(frame));
+ wpa_ft_rrb_oui_send(sm->wpa_auth, r0kh->addr, FT_PACKET_R0KH_R1KH_PULL,
+ packet, packet_len);
+
+ os_free(packet);
return 0;
}
-int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
- struct wpa_ptk *ptk)
+int wpa_ft_store_pmk_fils(struct wpa_state_machine *sm,
+ const u8 *pmk_r0, const u8 *pmk_r0_name)
{
- u8 pmk_r0[PMK_LEN], pmk_r0_name[WPA_PMK_NAME_LEN];
- u8 pmk_r1[PMK_LEN];
+ int expires_in = sm->wpa_auth->conf.r0_key_lifetime;
+ struct vlan_description vlan;
+ const u8 *identity, *radius_cui;
+ size_t identity_len, radius_cui_len;
+ int session_timeout;
+ size_t pmk_r0_len = wpa_key_mgmt_sha384(sm->wpa_key_mgmt) ?
+ SHA384_MAC_LEN : PMK_LEN;
+
+ if (wpa_ft_get_vlan(sm->wpa_auth, sm->addr, &vlan) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: vlan not available for STA " MACSTR,
+ MAC2STR(sm->addr));
+ return -1;
+ }
+
+ identity_len = wpa_ft_get_identity(sm->wpa_auth, sm->addr, &identity);
+ radius_cui_len = wpa_ft_get_radius_cui(sm->wpa_auth, sm->addr,
+ &radius_cui);
+ session_timeout = wpa_ft_get_session_timeout(sm->wpa_auth, sm->addr);
+
+ return wpa_ft_store_pmk_r0(sm->wpa_auth, sm->addr, pmk_r0, pmk_r0_len,
+ pmk_r0_name, sm->pairwise, &vlan, expires_in,
+ session_timeout, identity, identity_len,
+ radius_cui, radius_cui_len);
+}
+
+
+int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, struct wpa_ptk *ptk)
+{
+ u8 pmk_r0[PMK_LEN_MAX], pmk_r0_name[WPA_PMK_NAME_LEN];
+ size_t pmk_r0_len = wpa_key_mgmt_sha384(sm->wpa_key_mgmt) ?
+ SHA384_MAC_LEN : PMK_LEN;
+ size_t pmk_r1_len = pmk_r0_len;
+ u8 pmk_r1[PMK_LEN_MAX];
u8 ptk_name[WPA_PMK_NAME_LEN];
const u8 *mdid = sm->wpa_auth->conf.mobility_domain;
const u8 *r0kh = sm->wpa_auth->conf.r0_key_holder;
const u8 *r1kh = sm->wpa_auth->conf.r1_key_holder;
const u8 *ssid = sm->wpa_auth->conf.ssid;
size_t ssid_len = sm->wpa_auth->conf.ssid_len;
-
- if (sm->xxkey_len == 0) {
+ int psk_local = sm->wpa_auth->conf.ft_psk_generate_local;
+ int expires_in = sm->wpa_auth->conf.r0_key_lifetime;
+ struct vlan_description vlan;
+ const u8 *identity, *radius_cui;
+ size_t identity_len, radius_cui_len;
+ int session_timeout;
+ const u8 *mpmk;
+ size_t mpmk_len;
+
+ if (sm->xxkey_len > 0) {
+ mpmk = sm->xxkey;
+ mpmk_len = sm->xxkey_len;
+ } else if (sm->pmksa) {
+ mpmk = sm->pmksa->pmk;
+ mpmk_len = sm->pmksa->pmk_len;
+ } else {
wpa_printf(MSG_DEBUG, "FT: XXKey not available for key "
"derivation");
return -1;
}
- wpa_derive_pmk_r0(sm->xxkey, sm->xxkey_len, ssid, ssid_len, mdid,
- r0kh, r0kh_len, sm->addr, pmk_r0, pmk_r0_name);
- wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, PMK_LEN);
- wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name, WPA_PMK_NAME_LEN);
- wpa_ft_store_pmk_r0(sm->wpa_auth, sm->addr, pmk_r0, pmk_r0_name,
- sm->pairwise);
+ if (wpa_ft_get_vlan(sm->wpa_auth, sm->addr, &vlan) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: vlan not available for STA " MACSTR,
+ MAC2STR(sm->addr));
+ return -1;
+ }
+
+ identity_len = wpa_ft_get_identity(sm->wpa_auth, sm->addr, &identity);
+ radius_cui_len = wpa_ft_get_radius_cui(sm->wpa_auth, sm->addr,
+ &radius_cui);
+ session_timeout = wpa_ft_get_session_timeout(sm->wpa_auth, sm->addr);
- wpa_derive_pmk_r1(pmk_r0, pmk_r0_name, r1kh, sm->addr,
- pmk_r1, sm->pmk_r1_name);
- wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, PMK_LEN);
+ if (wpa_derive_pmk_r0(mpmk, mpmk_len, ssid, ssid_len, mdid,
+ r0kh, r0kh_len, sm->addr,
+ pmk_r0, pmk_r0_name,
+ wpa_key_mgmt_sha384(sm->wpa_key_mgmt)) < 0)
+ return -1;
+ wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, pmk_r0_len);
+ wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name, WPA_PMK_NAME_LEN);
+ if (!psk_local || !wpa_key_mgmt_ft_psk(sm->wpa_key_mgmt))
+ wpa_ft_store_pmk_r0(sm->wpa_auth, sm->addr, pmk_r0, pmk_r0_len,
+ pmk_r0_name,
+ sm->pairwise, &vlan, expires_in,
+ session_timeout, identity, identity_len,
+ radius_cui, radius_cui_len);
+
+ if (wpa_derive_pmk_r1(pmk_r0, pmk_r0_len, pmk_r0_name, r1kh, sm->addr,
+ pmk_r1, sm->pmk_r1_name) < 0)
+ return -1;
+ wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, pmk_r1_len);
wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", sm->pmk_r1_name,
WPA_PMK_NAME_LEN);
- wpa_ft_store_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1, sm->pmk_r1_name,
- sm->pairwise);
-
- return wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr,
- sm->wpa_auth->addr, sm->pmk_r1_name,
+ if (!psk_local || !wpa_key_mgmt_ft_psk(sm->wpa_key_mgmt))
+ wpa_ft_store_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1, pmk_r1_len,
+ sm->pmk_r1_name, sm->pairwise, &vlan,
+ expires_in, session_timeout, identity,
+ identity_len, radius_cui, radius_cui_len);
+
+ return wpa_pmk_r1_to_ptk(pmk_r1, pmk_r1_len, sm->SNonce, sm->ANonce,
+ sm->addr, sm->wpa_auth->addr, sm->pmk_r1_name,
ptk, ptk_name, sm->wpa_key_mgmt, sm->pairwise);
}
static inline int wpa_auth_get_seqnum(struct wpa_authenticator *wpa_auth,
const u8 *addr, int idx, u8 *seq)
{
- if (wpa_auth->cb.get_seqnum == NULL)
+ if (wpa_auth->cb->get_seqnum == NULL)
return -1;
- return wpa_auth->cb.get_seqnum(wpa_auth->cb.ctx, addr, idx, seq);
+ return wpa_auth->cb->get_seqnum(wpa_auth->cb_ctx, addr, idx, seq);
}
const u8 *key;
size_t key_len;
u8 keybuf[32];
+ const u8 *kek;
+ size_t kek_len;
+
+ if (wpa_key_mgmt_fils(sm->wpa_key_mgmt)) {
+ kek = sm->PTK.kek2;
+ kek_len = sm->PTK.kek2_len;
+ } else {
+ kek = sm->PTK.kek;
+ kek_len = sm->PTK.kek_len;
+ }
key_len = gsm->GTK_len;
if (key_len > sizeof(keybuf))
WPA_PUT_LE16(&subelem[2], gsm->GN & 0x03);
subelem[4] = gsm->GTK_len;
wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN, subelem + 5);
- if (aes_wrap(sm->PTK.kek, sm->PTK.kek_len, key_len / 8, key,
- subelem + 13)) {
+ if (aes_wrap(kek, kek_len, key_len / 8, key, subelem + 13)) {
+ wpa_printf(MSG_DEBUG,
+ "FT: GTK subelem encryption failed: kek_len=%d",
+ (int) kek_len);
os_free(subelem);
return NULL;
}
+ forced_memzero(keybuf, sizeof(keybuf));
*len = subelem_len;
return subelem;
}
-#ifdef CONFIG_IEEE80211W
static u8 * wpa_ft_igtk_subelem(struct wpa_state_machine *sm, size_t *len)
{
u8 *subelem, *pos;
struct wpa_group *gsm = sm->group;
size_t subelem_len;
+ const u8 *kek;
+ size_t kek_len;
+ size_t igtk_len;
+
+ if (wpa_key_mgmt_fils(sm->wpa_key_mgmt)) {
+ kek = sm->PTK.kek2;
+ kek_len = sm->PTK.kek2_len;
+ } else {
+ kek = sm->PTK.kek;
+ kek_len = sm->PTK.kek_len;
+ }
+
+ igtk_len = wpa_cipher_key_len(sm->wpa_auth->conf.group_mgmt_cipher);
/* Sub-elem ID[1] | Length[1] | KeyID[2] | IPN[6] | Key Length[1] |
* Key[16+8] */
- subelem_len = 1 + 1 + 2 + 6 + 1 + WPA_IGTK_LEN + 8;
+ subelem_len = 1 + 1 + 2 + 6 + 1 + igtk_len + 8;
subelem = os_zalloc(subelem_len);
if (subelem == NULL)
return NULL;
pos += 2;
wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN_igtk, pos);
pos += 6;
- *pos++ = WPA_IGTK_LEN;
- if (aes_wrap(sm->PTK.kek, sm->PTK.kek_len, WPA_IGTK_LEN / 8,
+ *pos++ = igtk_len;
+ if (aes_wrap(kek, kek_len, igtk_len / 8,
gsm->IGTK[gsm->GN_igtk - 4], pos)) {
+ wpa_printf(MSG_DEBUG,
+ "FT: IGTK subelem encryption failed: kek_len=%d",
+ (int) kek_len);
os_free(subelem);
return NULL;
}
*len = subelem_len;
return subelem;
}
-#endif /* CONFIG_IEEE80211W */
static u8 * wpa_ft_process_rdie(struct wpa_state_machine *sm,
const u8 *req_ies, size_t req_ies_len)
{
u8 *end, *mdie, *ftie, *rsnie = NULL, *r0kh_id, *subelem = NULL;
+ u8 *fte_mic, *elem_count;
size_t mdie_len, ftie_len, rsnie_len = 0, r0kh_id_len, subelem_len = 0;
+ u8 rsnxe[10];
+ size_t rsnxe_len;
int res;
struct wpa_auth_config *conf;
- struct rsn_ftie *_ftie;
struct wpa_ft_ies parse;
u8 *ric_start;
u8 *anonce, *snonce;
+ const u8 *kck;
+ size_t kck_len;
+ int use_sha384;
if (sm == NULL)
return pos;
+ use_sha384 = wpa_key_mgmt_sha384(sm->wpa_key_mgmt);
conf = &sm->wpa_auth->conf;
if (!wpa_key_mgmt_ft(sm->wpa_key_mgmt))
end = pos + max_len;
- if (auth_alg == WLAN_AUTH_FT) {
+ if (auth_alg == WLAN_AUTH_FT ||
+ ((auth_alg == WLAN_AUTH_FILS_SK ||
+ auth_alg == WLAN_AUTH_FILS_SK_PFS ||
+ auth_alg == WLAN_AUTH_FILS_PK) &&
+ (sm->wpa_key_mgmt & (WPA_KEY_MGMT_FT_FILS_SHA256 |
+ WPA_KEY_MGMT_FT_FILS_SHA384)))) {
+ if (!sm->pmk_r1_name_valid) {
+ wpa_printf(MSG_ERROR,
+ "FT: PMKR1Name is not valid for Assoc Resp RSNE");
+ return NULL;
+ }
+ wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name for Assoc Resp RSNE",
+ sm->pmk_r1_name, WPA_PMK_NAME_LEN);
/*
* RSN (only present if this is a Reassociation Response and
- * part of a fast BSS transition)
+ * part of a fast BSS transition; or if this is a
+ * (Re)Association Response frame during an FT initial mobility
+ * domain association using FILS)
*/
res = wpa_write_rsn_ie(conf, pos, end - pos, sm->pmk_r1_name);
if (res < 0)
- return pos;
+ return NULL;
rsnie = pos;
rsnie_len = res;
pos += res;
/* Mobility Domain Information */
res = wpa_write_mdie(conf, pos, end - pos);
if (res < 0)
- return pos;
+ return NULL;
mdie = pos;
mdie_len = res;
pos += res;
/* Fast BSS Transition Information */
if (auth_alg == WLAN_AUTH_FT) {
subelem = wpa_ft_gtk_subelem(sm, &subelem_len);
+ if (!subelem) {
+ wpa_printf(MSG_DEBUG,
+ "FT: Failed to add GTK subelement");
+ return NULL;
+ }
r0kh_id = sm->r0kh_id;
r0kh_id_len = sm->r0kh_id_len;
anonce = sm->ANonce;
snonce = sm->SNonce;
-#ifdef CONFIG_IEEE80211W
if (sm->mgmt_frame_prot) {
u8 *igtk;
size_t igtk_len;
u8 *nbuf;
igtk = wpa_ft_igtk_subelem(sm, &igtk_len);
if (igtk == NULL) {
+ wpa_printf(MSG_DEBUG,
+ "FT: Failed to add IGTK subelement");
os_free(subelem);
- return pos;
+ return NULL;
}
nbuf = os_realloc(subelem, subelem_len + igtk_len);
if (nbuf == NULL) {
os_free(subelem);
os_free(igtk);
- return pos;
+ return NULL;
}
subelem = nbuf;
os_memcpy(subelem + subelem_len, igtk, igtk_len);
subelem_len += igtk_len;
os_free(igtk);
}
-#endif /* CONFIG_IEEE80211W */
+#ifdef CONFIG_OCV
+ if (wpa_auth_uses_ocv(sm)) {
+ struct wpa_channel_info ci;
+ u8 *nbuf, *ocipos;
+
+ if (wpa_channel_info(sm->wpa_auth, &ci) != 0) {
+ wpa_printf(MSG_WARNING,
+ "Failed to get channel info for OCI element");
+ os_free(subelem);
+ return NULL;
+ }
+
+ subelem_len += 2 + OCV_OCI_LEN;
+ nbuf = os_realloc(subelem, subelem_len);
+ if (!nbuf) {
+ os_free(subelem);
+ return NULL;
+ }
+ subelem = nbuf;
+
+ ocipos = subelem + subelem_len - 2 - OCV_OCI_LEN;
+ *ocipos++ = FTIE_SUBELEM_OCI;
+ *ocipos++ = OCV_OCI_LEN;
+ if (ocv_insert_oci(&ci, &ocipos) < 0) {
+ os_free(subelem);
+ return NULL;
+ }
+ }
+#endif /* CONFIG_OCV */
} else {
r0kh_id = conf->r0_key_holder;
r0kh_id_len = conf->r0_key_holder_len;
anonce = NULL;
snonce = NULL;
}
- res = wpa_write_ftie(conf, r0kh_id, r0kh_id_len, anonce, snonce, pos,
- end - pos, subelem, subelem_len);
+ res = wpa_write_ftie(conf, use_sha384, r0kh_id, r0kh_id_len,
+ anonce, snonce, pos, end - pos,
+ subelem, subelem_len);
os_free(subelem);
if (res < 0)
- return pos;
+ return NULL;
ftie = pos;
ftie_len = res;
pos += res;
- os_free(sm->assoc_resp_ftie);
- sm->assoc_resp_ftie = os_malloc(ftie_len);
- if (sm->assoc_resp_ftie)
- os_memcpy(sm->assoc_resp_ftie, ftie, ftie_len);
+ if (use_sha384) {
+ struct rsn_ftie_sha384 *_ftie =
+ (struct rsn_ftie_sha384 *) (ftie + 2);
+
+ fte_mic = _ftie->mic;
+ elem_count = &_ftie->mic_control[1];
+ } else {
+ struct rsn_ftie *_ftie = (struct rsn_ftie *) (ftie + 2);
- _ftie = (struct rsn_ftie *) (ftie + 2);
+ fte_mic = _ftie->mic;
+ elem_count = &_ftie->mic_control[1];
+ }
if (auth_alg == WLAN_AUTH_FT)
- _ftie->mic_control[1] = 3; /* Information element count */
+ *elem_count = 3; /* Information element count */
ric_start = pos;
- if (wpa_ft_parse_ies(req_ies, req_ies_len, &parse) == 0 && parse.ric) {
+ if (wpa_ft_parse_ies(req_ies, req_ies_len, &parse, use_sha384) == 0
+ && parse.ric) {
pos = wpa_ft_process_ric(sm, pos, end, parse.ric,
parse.ric_len);
if (auth_alg == WLAN_AUTH_FT)
- _ftie->mic_control[1] +=
+ *elem_count +=
ieee802_11_ie_count(ric_start,
pos - ric_start);
}
if (ric_start == pos)
ric_start = NULL;
+ res = wpa_write_rsnxe(&sm->wpa_auth->conf, rsnxe, sizeof(rsnxe));
+ if (res < 0)
+ return NULL;
+ rsnxe_len = res;
+ if (auth_alg == WLAN_AUTH_FT && rsnxe_len)
+ *elem_count += 1;
+
+ if (wpa_key_mgmt_fils(sm->wpa_key_mgmt)) {
+ kck = sm->PTK.kck2;
+ kck_len = sm->PTK.kck2_len;
+ } else {
+ kck = sm->PTK.kck;
+ kck_len = sm->PTK.kck_len;
+ }
if (auth_alg == WLAN_AUTH_FT &&
- wpa_ft_mic(sm->PTK.kck, sm->PTK.kck_len, sm->addr,
- sm->wpa_auth->addr, 6,
+ wpa_ft_mic(kck, kck_len, sm->addr, sm->wpa_auth->addr, 6,
mdie, mdie_len, ftie, ftie_len,
rsnie, rsnie_len,
ric_start, ric_start ? pos - ric_start : 0,
- _ftie->mic) < 0)
+ rsnxe_len ? rsnxe : NULL, rsnxe_len,
+ fte_mic) < 0) {
wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC");
+ return NULL;
+ }
+
+ os_free(sm->assoc_resp_ftie);
+ sm->assoc_resp_ftie = os_malloc(ftie_len);
+ if (!sm->assoc_resp_ftie)
+ return NULL;
+ os_memcpy(sm->assoc_resp_ftie, ftie, ftie_len);
return pos;
}
static inline int wpa_auth_set_key(struct wpa_authenticator *wpa_auth,
int vlan_id,
enum wpa_alg alg, const u8 *addr, int idx,
- u8 *key, size_t key_len)
+ u8 *key, size_t key_len,
+ enum key_flag key_flag)
+{
+ if (wpa_auth->cb->set_key == NULL)
+ return -1;
+ return wpa_auth->cb->set_key(wpa_auth->cb_ctx, vlan_id, alg, addr, idx,
+ key, key_len, key_flag);
+}
+
+
+void wpa_ft_install_ptk(struct wpa_state_machine *sm)
+{
+ enum wpa_alg alg;
+ int klen;
+
+ /* MLME-SETKEYS.request(PTK) */
+ alg = wpa_cipher_to_alg(sm->pairwise);
+ klen = wpa_cipher_key_len(sm->pairwise);
+ if (!wpa_cipher_valid_pairwise(sm->pairwise)) {
+ wpa_printf(MSG_DEBUG, "FT: Unknown pairwise alg 0x%x - skip "
+ "PTK configuration", sm->pairwise);
+ return;
+ }
+
+ if (sm->tk_already_set) {
+ /* Must avoid TK reconfiguration to prevent clearing of TX/RX
+ * PN in the driver */
+ wpa_printf(MSG_DEBUG,
+ "FT: Do not re-install same PTK to the driver");
+ return;
+ }
+
+ /* FIX: add STA entry to kernel/driver here? The set_key will fail
+ * most likely without this.. At the moment, STA entry is added only
+ * after association has been completed. This function will be called
+ * again after association to get the PTK configured, but that could be
+ * optimized by adding the STA entry earlier.
+ */
+ if (wpa_auth_set_key(sm->wpa_auth, 0, alg, sm->addr, 0,
+ sm->PTK.tk, klen, KEY_FLAG_PAIRWISE_RX_TX))
+ return;
+
+ /* FIX: MLME-SetProtection.Request(TA, Tx_Rx) */
+ sm->pairwise_set = TRUE;
+ sm->tk_already_set = TRUE;
+}
+
+
+/* Derive PMK-R1 from PSK, check all available PSK */
+static int wpa_ft_psk_pmk_r1(struct wpa_state_machine *sm,
+ const u8 *req_pmk_r1_name,
+ u8 *out_pmk_r1, int *out_pairwise,
+ struct vlan_description *out_vlan,
+ const u8 **out_identity, size_t *out_identity_len,
+ const u8 **out_radius_cui,
+ size_t *out_radius_cui_len,
+ int *out_session_timeout)
+{
+ const u8 *pmk = NULL;
+ u8 pmk_r0[PMK_LEN], pmk_r0_name[WPA_PMK_NAME_LEN];
+ u8 pmk_r1[PMK_LEN], pmk_r1_name[WPA_PMK_NAME_LEN];
+ struct wpa_authenticator *wpa_auth = sm->wpa_auth;
+ const u8 *mdid = wpa_auth->conf.mobility_domain;
+ const u8 *r0kh = sm->r0kh_id;
+ size_t r0kh_len = sm->r0kh_id_len;
+ const u8 *r1kh = wpa_auth->conf.r1_key_holder;
+ const u8 *ssid = wpa_auth->conf.ssid;
+ size_t ssid_len = wpa_auth->conf.ssid_len;
+ int pairwise;
+
+ pairwise = sm->pairwise;
+
+ for (;;) {
+ pmk = wpa_ft_get_psk(wpa_auth, sm->addr, sm->p2p_dev_addr,
+ pmk);
+ if (pmk == NULL)
+ break;
+
+ if (wpa_derive_pmk_r0(pmk, PMK_LEN, ssid, ssid_len, mdid, r0kh,
+ r0kh_len, sm->addr,
+ pmk_r0, pmk_r0_name, 0) < 0 ||
+ wpa_derive_pmk_r1(pmk_r0, PMK_LEN, pmk_r0_name, r1kh,
+ sm->addr, pmk_r1, pmk_r1_name) < 0 ||
+ os_memcmp_const(pmk_r1_name, req_pmk_r1_name,
+ WPA_PMK_NAME_LEN) != 0)
+ continue;
+
+ /* We found a PSK that matches the requested pmk_r1_name */
+ wpa_printf(MSG_DEBUG,
+ "FT: Found PSK to generate PMK-R1 locally");
+ os_memcpy(out_pmk_r1, pmk_r1, PMK_LEN);
+ if (out_pairwise)
+ *out_pairwise = pairwise;
+ os_memcpy(sm->PMK, pmk, PMK_LEN);
+ sm->pmk_len = PMK_LEN;
+ if (out_vlan &&
+ wpa_ft_get_vlan(sm->wpa_auth, sm->addr, out_vlan) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: vlan not available for STA "
+ MACSTR, MAC2STR(sm->addr));
+ return -1;
+ }
+
+ if (out_identity && out_identity_len) {
+ *out_identity_len = wpa_ft_get_identity(
+ sm->wpa_auth, sm->addr, out_identity);
+ }
+
+ if (out_radius_cui && out_radius_cui_len) {
+ *out_radius_cui_len = wpa_ft_get_radius_cui(
+ sm->wpa_auth, sm->addr, out_radius_cui);
+ }
+
+ if (out_session_timeout) {
+ *out_session_timeout = wpa_ft_get_session_timeout(
+ sm->wpa_auth, sm->addr);
+ }
+
+ return 0;
+ }
+
+ wpa_printf(MSG_DEBUG,
+ "FT: Did not find PSK to generate PMK-R1 locally");
+ return -1;
+}
+
+
+/* Detect the configuration the station asked for.
+ * Required to detect FT-PSK and pairwise cipher.
+ */
+static int wpa_ft_set_key_mgmt(struct wpa_state_machine *sm,
+ struct wpa_ft_ies *parse)
{
- if (wpa_auth->cb.set_key == NULL)
+ int key_mgmt, ciphers;
+
+ if (sm->wpa_key_mgmt)
+ return 0;
+
+ key_mgmt = parse->key_mgmt & sm->wpa_auth->conf.wpa_key_mgmt;
+ if (!key_mgmt) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid key mgmt (0x%x) from "
+ MACSTR, parse->key_mgmt, MAC2STR(sm->addr));
+ return -1;
+ }
+ if (key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
+ sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
+#ifdef CONFIG_SHA384
+ else if (key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X_SHA384)
+ sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X_SHA384;
+#endif /* CONFIG_SHA384 */
+ else if (key_mgmt & WPA_KEY_MGMT_FT_PSK)
+ sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_PSK;
+#ifdef CONFIG_FILS
+ else if (key_mgmt & WPA_KEY_MGMT_FT_FILS_SHA256)
+ sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_FILS_SHA256;
+ else if (key_mgmt & WPA_KEY_MGMT_FT_FILS_SHA384)
+ sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_FILS_SHA384;
+#endif /* CONFIG_FILS */
+ ciphers = parse->pairwise_cipher & sm->wpa_auth->conf.rsn_pairwise;
+ if (!ciphers) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid pairwise cipher (0x%x) from "
+ MACSTR,
+ parse->pairwise_cipher, MAC2STR(sm->addr));
return -1;
- return wpa_auth->cb.set_key(wpa_auth->cb.ctx, vlan_id, alg, addr, idx,
- key, key_len);
+ }
+ sm->pairwise = wpa_pick_pairwise_cipher(ciphers, 0);
+
+ return 0;
}
-void wpa_ft_install_ptk(struct wpa_state_machine *sm)
-{
- enum wpa_alg alg;
- int klen;
+static int wpa_ft_local_derive_pmk_r1(struct wpa_authenticator *wpa_auth,
+ struct wpa_state_machine *sm,
+ const u8 *r0kh_id, size_t r0kh_id_len,
+ const u8 *req_pmk_r0_name,
+ const u8 *req_pmk_r1_name,
+ u8 *out_pmk_r1, int *out_pairwise,
+ struct vlan_description *vlan,
+ const u8 **identity, size_t *identity_len,
+ const u8 **radius_cui,
+ size_t *radius_cui_len,
+ int *out_session_timeout)
+{
+ struct wpa_auth_config *conf = &wpa_auth->conf;
+ const struct wpa_ft_pmk_r0_sa *r0;
+ u8 pmk_r1_name[WPA_PMK_NAME_LEN];
+ int expires_in = 0;
+ int session_timeout = 0;
+ struct os_reltime now;
+
+ if (conf->r0_key_holder_len != r0kh_id_len ||
+ os_memcmp(conf->r0_key_holder, r0kh_id, conf->r0_key_holder_len) !=
+ 0)
+ return -1; /* not our R0KH-ID */
+
+ wpa_printf(MSG_DEBUG, "FT: STA R0KH-ID matching local configuration");
+ if (wpa_ft_fetch_pmk_r0(sm->wpa_auth, sm->addr, req_pmk_r0_name, &r0) <
+ 0)
+ return -1; /* no matching PMKR0Name in local cache */
+
+ wpa_printf(MSG_DEBUG, "FT: Requested PMKR0Name found in local cache");
- /* MLME-SETKEYS.request(PTK) */
- alg = wpa_cipher_to_alg(sm->pairwise);
- klen = wpa_cipher_key_len(sm->pairwise);
- if (!wpa_cipher_valid_pairwise(sm->pairwise)) {
- wpa_printf(MSG_DEBUG, "FT: Unknown pairwise alg 0x%x - skip "
- "PTK configuration", sm->pairwise);
- return;
+ if (wpa_derive_pmk_r1(r0->pmk_r0, r0->pmk_r0_len, r0->pmk_r0_name,
+ conf->r1_key_holder,
+ sm->addr, out_pmk_r1, pmk_r1_name) < 0)
+ return -1;
+ wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", out_pmk_r1, r0->pmk_r0_len);
+ wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name, WPA_PMK_NAME_LEN);
+
+ os_get_reltime(&now);
+ if (r0->expiration)
+ expires_in = r0->expiration - now.sec;
+
+ if (r0->session_timeout)
+ session_timeout = r0->session_timeout - now.sec;
+
+ wpa_ft_store_pmk_r1(wpa_auth, sm->addr, out_pmk_r1, r0->pmk_r0_len,
+ pmk_r1_name,
+ sm->pairwise, r0->vlan, expires_in, session_timeout,
+ r0->identity, r0->identity_len,
+ r0->radius_cui, r0->radius_cui_len);
+
+ *out_pairwise = sm->pairwise;
+ if (vlan) {
+ if (r0->vlan)
+ *vlan = *r0->vlan;
+ else
+ os_memset(vlan, 0, sizeof(*vlan));
}
- /* FIX: add STA entry to kernel/driver here? The set_key will fail
- * most likely without this.. At the moment, STA entry is added only
- * after association has been completed. This function will be called
- * again after association to get the PTK configured, but that could be
- * optimized by adding the STA entry earlier.
- */
- if (wpa_auth_set_key(sm->wpa_auth, 0, alg, sm->addr, 0,
- sm->PTK.tk, klen))
- return;
+ if (identity && identity_len) {
+ *identity = r0->identity;
+ *identity_len = r0->identity_len;
+ }
- /* FIX: MLME-SetProtection.Request(TA, Tx_Rx) */
- sm->pairwise_set = TRUE;
+ if (radius_cui && radius_cui_len) {
+ *radius_cui = r0->radius_cui;
+ *radius_cui_len = r0->radius_cui_len;
+ }
+
+ *out_session_timeout = session_timeout;
+
+ return 0;
}
u8 **resp_ies, size_t *resp_ies_len)
{
struct rsn_mdie *mdie;
- struct rsn_ftie *ftie;
- u8 pmk_r1[PMK_LEN], pmk_r1_name[WPA_PMK_NAME_LEN];
+ u8 pmk_r1[PMK_LEN_MAX], pmk_r1_name[WPA_PMK_NAME_LEN];
u8 ptk_name[WPA_PMK_NAME_LEN];
struct wpa_auth_config *conf;
struct wpa_ft_ies parse;
size_t buflen;
int ret;
u8 *pos, *end;
- int pairwise;
+ int pairwise, session_timeout = 0;
+ struct vlan_description vlan;
+ const u8 *identity, *radius_cui;
+ size_t identity_len = 0, radius_cui_len = 0;
+ int use_sha384;
+ size_t pmk_r1_len;
*resp_ies = NULL;
*resp_ies_len = 0;
wpa_hexdump(MSG_DEBUG, "FT: Received authentication frame IEs",
ies, ies_len);
- if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
+ if (wpa_ft_parse_ies(ies, ies_len, &parse, -1)) {
wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs");
return WLAN_STATUS_UNSPECIFIED_FAILURE;
}
+ use_sha384 = wpa_key_mgmt_sha384(parse.key_mgmt);
+ pmk_r1_len = use_sha384 ? SHA384_MAC_LEN : PMK_LEN;
mdie = (struct rsn_mdie *) parse.mdie;
if (mdie == NULL || parse.mdie_len < sizeof(*mdie) ||
return WLAN_STATUS_INVALID_MDIE;
}
- ftie = (struct rsn_ftie *) parse.ftie;
- if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
- wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
- return WLAN_STATUS_INVALID_FTIE;
- }
+ if (use_sha384) {
+ struct rsn_ftie_sha384 *ftie;
+
+ ftie = (struct rsn_ftie_sha384 *) parse.ftie;
+ if (!ftie || parse.ftie_len < sizeof(*ftie)) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
+ return WLAN_STATUS_INVALID_FTIE;
+ }
+
+ os_memcpy(sm->SNonce, ftie->snonce, WPA_NONCE_LEN);
+ } else {
+ struct rsn_ftie *ftie;
+
+ ftie = (struct rsn_ftie *) parse.ftie;
+ if (!ftie || parse.ftie_len < sizeof(*ftie)) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
+ return WLAN_STATUS_INVALID_FTIE;
+ }
- os_memcpy(sm->SNonce, ftie->snonce, WPA_NONCE_LEN);
+ os_memcpy(sm->SNonce, ftie->snonce, WPA_NONCE_LEN);
+ }
if (parse.r0kh_id == NULL) {
wpa_printf(MSG_DEBUG, "FT: Invalid FTIE - no R0KH-ID");
return WLAN_STATUS_INVALID_PMKID;
}
+ if (wpa_ft_set_key_mgmt(sm, &parse) < 0)
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
+
wpa_hexdump(MSG_DEBUG, "FT: Requested PMKR0Name",
parse.rsn_pmkid, WPA_PMK_NAME_LEN);
- wpa_derive_pmk_r1_name(parse.rsn_pmkid,
- sm->wpa_auth->conf.r1_key_holder, sm->addr,
- pmk_r1_name);
+ if (wpa_derive_pmk_r1_name(parse.rsn_pmkid,
+ sm->wpa_auth->conf.r1_key_holder, sm->addr,
+ pmk_r1_name, use_sha384) < 0)
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
wpa_hexdump(MSG_DEBUG, "FT: Derived requested PMKR1Name",
pmk_r1_name, WPA_PMK_NAME_LEN);
- if (wpa_ft_fetch_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1_name, pmk_r1,
- &pairwise) < 0) {
+ if (conf->ft_psk_generate_local &&
+ wpa_key_mgmt_ft_psk(sm->wpa_key_mgmt)) {
+ if (wpa_ft_psk_pmk_r1(sm, pmk_r1_name, pmk_r1, &pairwise,
+ &vlan, &identity, &identity_len,
+ &radius_cui, &radius_cui_len,
+ &session_timeout) < 0)
+ return WLAN_STATUS_INVALID_PMKID;
+ wpa_printf(MSG_DEBUG,
+ "FT: Generated PMK-R1 for FT-PSK locally");
+ } else if (wpa_ft_fetch_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1_name,
+ pmk_r1, &pmk_r1_len, &pairwise, &vlan,
+ &identity, &identity_len, &radius_cui,
+ &radius_cui_len, &session_timeout) < 0) {
+ wpa_printf(MSG_DEBUG,
+ "FT: No PMK-R1 available in local cache for the requested PMKR1Name");
+ if (wpa_ft_local_derive_pmk_r1(sm->wpa_auth, sm,
+ parse.r0kh_id, parse.r0kh_id_len,
+ parse.rsn_pmkid,
+ pmk_r1_name, pmk_r1, &pairwise,
+ &vlan, &identity, &identity_len,
+ &radius_cui, &radius_cui_len,
+ &session_timeout) == 0) {
+ wpa_printf(MSG_DEBUG,
+ "FT: Generated PMK-R1 based on local PMK-R0");
+ goto pmk_r1_derived;
+ }
+
if (wpa_ft_pull_pmk_r1(sm, ies, ies_len, parse.rsn_pmkid) < 0) {
- wpa_printf(MSG_DEBUG, "FT: Did not have matching "
- "PMK-R1 and unknown R0KH-ID");
+ wpa_printf(MSG_DEBUG,
+ "FT: Did not have matching PMK-R1 and either unknown or blocked R0KH-ID or NAK from R0KH");
return WLAN_STATUS_INVALID_PMKID;
}
return -1; /* Status pending */
+ } else {
+ wpa_printf(MSG_DEBUG, "FT: Found PMKR1Name from local cache");
}
- wpa_hexdump_key(MSG_DEBUG, "FT: Selected PMK-R1", pmk_r1, PMK_LEN);
+pmk_r1_derived:
+ wpa_hexdump_key(MSG_DEBUG, "FT: Selected PMK-R1", pmk_r1, pmk_r1_len);
sm->pmk_r1_name_valid = 1;
os_memcpy(sm->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN);
+ os_memcpy(sm->pmk_r1, pmk_r1, pmk_r1_len);
+ sm->pmk_r1_len = pmk_r1_len;
if (random_get_bytes(sm->ANonce, WPA_NONCE_LEN)) {
wpa_printf(MSG_DEBUG, "FT: Failed to get random data for "
wpa_hexdump(MSG_DEBUG, "FT: Generated ANonce",
sm->ANonce, WPA_NONCE_LEN);
- if (wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr,
- sm->wpa_auth->addr, pmk_r1_name,
+ if (wpa_pmk_r1_to_ptk(pmk_r1, pmk_r1_len, sm->SNonce, sm->ANonce,
+ sm->addr, sm->wpa_auth->addr, pmk_r1_name,
&sm->PTK, ptk_name, sm->wpa_key_mgmt,
pairwise) < 0)
return WLAN_STATUS_UNSPECIFIED_FAILURE;
sm->pairwise = pairwise;
sm->PTK_valid = TRUE;
+ sm->tk_already_set = FALSE;
wpa_ft_install_ptk(sm);
+ if (wpa_ft_set_vlan(sm->wpa_auth, sm->addr, &vlan) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to configure VLAN");
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
+ }
+ if (wpa_ft_set_identity(sm->wpa_auth, sm->addr,
+ identity, identity_len) < 0 ||
+ wpa_ft_set_radius_cui(sm->wpa_auth, sm->addr,
+ radius_cui, radius_cui_len) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to configure identity/CUI");
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
+ }
+ wpa_ft_set_session_timeout(sm->wpa_auth, sm->addr, session_timeout);
+
buflen = 2 + sizeof(struct rsn_mdie) + 2 + sizeof(struct rsn_ftie) +
2 + FT_R1KH_ID_LEN + 200;
*resp_ies = os_zalloc(buflen);
- if (*resp_ies == NULL) {
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
+ if (*resp_ies == NULL)
+ goto fail;
pos = *resp_ies;
end = *resp_ies + buflen;
ret = wpa_write_rsn_ie(conf, pos, end - pos, parse.rsn_pmkid);
- if (ret < 0) {
- os_free(*resp_ies);
- *resp_ies = NULL;
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
+ if (ret < 0)
+ goto fail;
pos += ret;
ret = wpa_write_mdie(conf, pos, end - pos);
- if (ret < 0) {
- os_free(*resp_ies);
- *resp_ies = NULL;
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
+ if (ret < 0)
+ goto fail;
pos += ret;
- ret = wpa_write_ftie(conf, parse.r0kh_id, parse.r0kh_id_len,
+ ret = wpa_write_ftie(conf, use_sha384, parse.r0kh_id, parse.r0kh_id_len,
sm->ANonce, sm->SNonce, pos, end - pos, NULL, 0);
- if (ret < 0) {
- os_free(*resp_ies);
- *resp_ies = NULL;
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
+ if (ret < 0)
+ goto fail;
pos += ret;
*resp_ies_len = pos - *resp_ies;
return WLAN_STATUS_SUCCESS;
+fail:
+ os_free(*resp_ies);
+ *resp_ies = NULL;
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
}
sm->ft_pending_cb = cb;
sm->ft_pending_cb_ctx = ctx;
sm->ft_pending_auth_transaction = auth_transaction;
+ sm->ft_pending_pull_left_retries = sm->wpa_auth->conf.rkh_pull_retries;
res = wpa_ft_process_auth_req(sm, ies, ies_len, &resp_ies,
&resp_ies_len);
if (res < 0) {
status = res;
wpa_printf(MSG_DEBUG, "FT: FT authentication response: dst=" MACSTR
- " auth_transaction=%d status=%d",
- MAC2STR(sm->addr), auth_transaction + 1, status);
+ " auth_transaction=%d status=%u (%s)",
+ MAC2STR(sm->addr), auth_transaction + 1, status,
+ status2str(status));
wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len);
cb(ctx, sm->addr, bssid, auth_transaction + 1, status,
resp_ies, resp_ies_len);
{
struct wpa_ft_ies parse;
struct rsn_mdie *mdie;
- struct rsn_ftie *ftie;
u8 mic[WPA_EAPOL_KEY_MIC_MAX_LEN];
size_t mic_len = 16;
unsigned int count;
+ const u8 *kck;
+ size_t kck_len;
+ int use_sha384;
+ const u8 *anonce, *snonce, *fte_mic;
+ u8 fte_elem_count;
if (sm == NULL)
return WLAN_STATUS_UNSPECIFIED_FAILURE;
+ use_sha384 = wpa_key_mgmt_sha384(sm->wpa_key_mgmt);
+
wpa_hexdump(MSG_DEBUG, "FT: Reassoc Req IEs", ies, ies_len);
- if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
+ if (wpa_ft_parse_ies(ies, ies_len, &parse, use_sha384) < 0) {
wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs");
return WLAN_STATUS_UNSPECIFIED_FAILURE;
}
return WLAN_STATUS_INVALID_MDIE;
}
- ftie = (struct rsn_ftie *) parse.ftie;
- if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
- wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
- return WLAN_STATUS_INVALID_FTIE;
+ if (use_sha384) {
+ struct rsn_ftie_sha384 *ftie;
+
+ ftie = (struct rsn_ftie_sha384 *) parse.ftie;
+ if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
+ return WLAN_STATUS_INVALID_FTIE;
+ }
+
+ anonce = ftie->anonce;
+ snonce = ftie->snonce;
+ fte_elem_count = ftie->mic_control[1];
+ fte_mic = ftie->mic;
+ } else {
+ struct rsn_ftie *ftie;
+
+ ftie = (struct rsn_ftie *) parse.ftie;
+ if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
+ return WLAN_STATUS_INVALID_FTIE;
+ }
+
+ anonce = ftie->anonce;
+ snonce = ftie->snonce;
+ fte_elem_count = ftie->mic_control[1];
+ fte_mic = ftie->mic;
}
- if (os_memcmp(ftie->snonce, sm->SNonce, WPA_NONCE_LEN) != 0) {
+ if (os_memcmp(snonce, sm->SNonce, WPA_NONCE_LEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: SNonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received SNonce",
- ftie->snonce, WPA_NONCE_LEN);
+ snonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected SNonce",
sm->SNonce, WPA_NONCE_LEN);
- return -1;
+ return WLAN_STATUS_INVALID_FTIE;
}
- if (os_memcmp(ftie->anonce, sm->ANonce, WPA_NONCE_LEN) != 0) {
+ if (os_memcmp(anonce, sm->ANonce, WPA_NONCE_LEN) != 0) {
wpa_printf(MSG_DEBUG, "FT: ANonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received ANonce",
- ftie->anonce, WPA_NONCE_LEN);
+ anonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected ANonce",
sm->ANonce, WPA_NONCE_LEN);
- return -1;
+ return WLAN_STATUS_INVALID_FTIE;
}
if (parse.r0kh_id == NULL) {
wpa_printf(MSG_DEBUG, "FT: No R0KH-ID subelem in FTIE");
- return -1;
+ return WLAN_STATUS_INVALID_FTIE;
}
if (parse.r0kh_id_len != sm->r0kh_id_len ||
parse.r0kh_id, parse.r0kh_id_len);
wpa_hexdump(MSG_DEBUG, "FT: The current R0KH-ID",
sm->r0kh_id, sm->r0kh_id_len);
- return -1;
+ return WLAN_STATUS_INVALID_FTIE;
}
if (parse.r1kh_id == NULL) {
wpa_printf(MSG_DEBUG, "FT: No R1KH-ID subelem in FTIE");
- return -1;
+ return WLAN_STATUS_INVALID_FTIE;
}
if (os_memcmp_const(parse.r1kh_id, sm->wpa_auth->conf.r1_key_holder,
parse.r1kh_id, FT_R1KH_ID_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected R1KH-ID",
sm->wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN);
- return -1;
+ return WLAN_STATUS_INVALID_FTIE;
}
if (parse.rsn_pmkid == NULL ||
{
wpa_printf(MSG_DEBUG, "FT: No matching PMKR1Name (PMKID) in "
"RSNIE (pmkid=%d)", !!parse.rsn_pmkid);
- return -1;
+ return WLAN_STATUS_INVALID_PMKID;
}
count = 3;
if (parse.ric)
count += ieee802_11_ie_count(parse.ric, parse.ric_len);
- if (ftie->mic_control[1] != count) {
+ if (parse.rsnxe)
+ count++;
+ if (fte_elem_count != count) {
wpa_printf(MSG_DEBUG, "FT: Unexpected IE count in MIC "
"Control: received %u expected %u",
- ftie->mic_control[1], count);
- return -1;
+ fte_elem_count, count);
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
}
- if (wpa_ft_mic(sm->PTK.kck, sm->PTK.kck_len, sm->addr,
- sm->wpa_auth->addr, 5,
+ if (wpa_key_mgmt_fils(sm->wpa_key_mgmt)) {
+ kck = sm->PTK.kck2;
+ kck_len = sm->PTK.kck2_len;
+ } else {
+ kck = sm->PTK.kck;
+ kck_len = sm->PTK.kck_len;
+ }
+ if (wpa_ft_mic(kck, kck_len, sm->addr, sm->wpa_auth->addr, 5,
parse.mdie - 2, parse.mdie_len + 2,
parse.ftie - 2, parse.ftie_len + 2,
parse.rsn - 2, parse.rsn_len + 2,
parse.ric, parse.ric_len,
+ parse.rsnxe ? parse.rsnxe - 2 : NULL,
+ parse.rsnxe ? parse.rsnxe_len + 2 : 0,
mic) < 0) {
wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC");
return WLAN_STATUS_UNSPECIFIED_FAILURE;
}
- if (os_memcmp_const(mic, ftie->mic, mic_len) != 0) {
+ if (os_memcmp_const(mic, fte_mic, mic_len) != 0) {
wpa_printf(MSG_DEBUG, "FT: Invalid MIC in FTIE");
wpa_printf(MSG_DEBUG, "FT: addr=" MACSTR " auth_addr=" MACSTR,
MAC2STR(sm->addr), MAC2STR(sm->wpa_auth->addr));
wpa_hexdump(MSG_MSGDUMP, "FT: Received MIC",
- ftie->mic, mic_len);
+ fte_mic, mic_len);
wpa_hexdump(MSG_MSGDUMP, "FT: Calculated MIC", mic, mic_len);
wpa_hexdump(MSG_MSGDUMP, "FT: MDIE",
parse.mdie - 2, parse.mdie_len + 2);
parse.ftie - 2, parse.ftie_len + 2);
wpa_hexdump(MSG_MSGDUMP, "FT: RSN",
parse.rsn - 2, parse.rsn_len + 2);
+ wpa_hexdump(MSG_MSGDUMP, "FT: RSNXE",
+ parse.rsnxe ? parse.rsnxe - 2 : NULL,
+ parse.rsnxe ? parse.rsnxe_len + 2 : 0);
return WLAN_STATUS_INVALID_FTIE;
}
+#ifdef CONFIG_OCV
+ if (wpa_auth_uses_ocv(sm)) {
+ struct wpa_channel_info ci;
+ int tx_chanwidth;
+ int tx_seg1_idx;
+
+ if (wpa_channel_info(sm->wpa_auth, &ci) != 0) {
+ wpa_printf(MSG_WARNING,
+ "Failed to get channel info to validate received OCI in (Re)Assoc Request");
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
+ }
+
+ if (get_sta_tx_parameters(sm,
+ channel_width_to_int(ci.chanwidth),
+ ci.seg1_idx, &tx_chanwidth,
+ &tx_seg1_idx) < 0)
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
+
+ if (ocv_verify_tx_params(parse.oci, parse.oci_len, &ci,
+ tx_chanwidth, tx_seg1_idx) != 0) {
+ wpa_printf(MSG_WARNING, "%s", ocv_errorstr);
+ return WLAN_STATUS_UNSPECIFIED_FAILURE;
+ }
+ }
+#endif /* CONFIG_OCV */
+
return WLAN_STATUS_SUCCESS;
}
wpa_hexdump(MSG_MSGDUMP, "FT: Action frame body", ies, ies_len);
+ if (!sm->wpa_auth->conf.ft_over_ds) {
+ wpa_printf(MSG_DEBUG, "FT: Over-DS option disabled - reject");
+ return -1;
+ }
+
/* RRB - Forward action frame to the target AP */
frame = os_malloc(sizeof(*frame) + len);
if (frame == NULL)
sm->ft_pending_cb = wpa_ft_rrb_rx_request_cb;
sm->ft_pending_cb_ctx = sm;
os_memcpy(sm->ft_pending_current_ap, current_ap, ETH_ALEN);
+ sm->ft_pending_pull_left_retries = sm->wpa_auth->conf.rkh_pull_retries;
res = wpa_ft_process_auth_req(sm, body, len, &resp_ies,
&resp_ies_len);
if (res < 0) {
u8 *pos;
wpa_printf(MSG_DEBUG, "FT: RRB authentication response: STA=" MACSTR
- " CurrentAP=" MACSTR " status=%d",
- MAC2STR(sm->addr), MAC2STR(current_ap), status);
+ " CurrentAP=" MACSTR " status=%u (%s)",
+ MAC2STR(sm->addr), MAC2STR(current_ap), status,
+ status2str(status));
wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len);
/* RRB - Forward action frame response to the Current AP */
}
+static int wpa_ft_rrb_build_r0(const u8 *key, const size_t key_len,
+ const struct tlv_list *tlvs,
+ const struct wpa_ft_pmk_r0_sa *pmk_r0,
+ const u8 *r1kh_id, const u8 *s1kh_id,
+ const struct tlv_list *tlv_auth,
+ const u8 *src_addr, u8 type,
+ u8 **packet, size_t *packet_len)
+{
+ u8 pmk_r1[PMK_LEN_MAX];
+ size_t pmk_r1_len = pmk_r0->pmk_r0_len;
+ u8 pmk_r1_name[WPA_PMK_NAME_LEN];
+ u8 f_pairwise[sizeof(le16)];
+ u8 f_expires_in[sizeof(le16)];
+ u8 f_session_timeout[sizeof(le32)];
+ int expires_in;
+ int session_timeout;
+ struct os_reltime now;
+ int ret;
+ struct tlv_list sess_tlv[] = {
+ { .type = FT_RRB_PMK_R1, .len = pmk_r1_len,
+ .data = pmk_r1 },
+ { .type = FT_RRB_PMK_R1_NAME, .len = sizeof(pmk_r1_name),
+ .data = pmk_r1_name },
+ { .type = FT_RRB_PAIRWISE, .len = sizeof(f_pairwise),
+ .data = f_pairwise },
+ { .type = FT_RRB_EXPIRES_IN, .len = sizeof(f_expires_in),
+ .data = f_expires_in },
+ { .type = FT_RRB_IDENTITY, .len = pmk_r0->identity_len,
+ .data = pmk_r0->identity },
+ { .type = FT_RRB_RADIUS_CUI, .len = pmk_r0->radius_cui_len,
+ .data = pmk_r0->radius_cui },
+ { .type = FT_RRB_SESSION_TIMEOUT,
+ .len = sizeof(f_session_timeout),
+ .data = f_session_timeout },
+ { .type = FT_RRB_LAST_EMPTY, .len = 0, .data = NULL },
+ };
+
+ if (wpa_derive_pmk_r1(pmk_r0->pmk_r0, pmk_r0->pmk_r0_len,
+ pmk_r0->pmk_r0_name, r1kh_id,
+ s1kh_id, pmk_r1, pmk_r1_name) < 0)
+ return -1;
+ wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 (for peer AP)",
+ pmk_r1, pmk_r1_len);
+ wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name (for peer AP)",
+ pmk_r1_name, WPA_PMK_NAME_LEN);
+ WPA_PUT_LE16(f_pairwise, pmk_r0->pairwise);
+
+ os_get_reltime(&now);
+ if (pmk_r0->expiration > now.sec)
+ expires_in = pmk_r0->expiration - now.sec;
+ else if (pmk_r0->expiration)
+ expires_in = 1;
+ else
+ expires_in = 0;
+ WPA_PUT_LE16(f_expires_in, expires_in);
+
+ if (pmk_r0->session_timeout > now.sec)
+ session_timeout = pmk_r0->session_timeout - now.sec;
+ else if (pmk_r0->session_timeout)
+ session_timeout = 1;
+ else
+ session_timeout = 0;
+ WPA_PUT_LE32(f_session_timeout, session_timeout);
+
+ ret = wpa_ft_rrb_build(key, key_len, tlvs, sess_tlv, tlv_auth,
+ pmk_r0->vlan, src_addr, type,
+ packet, packet_len);
+
+ forced_memzero(pmk_r1, sizeof(pmk_r1));
+
+ return ret;
+}
+
+
static int wpa_ft_rrb_rx_pull(struct wpa_authenticator *wpa_auth,
const u8 *src_addr,
- const u8 *data, size_t data_len)
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ int no_defer)
{
- struct ft_r0kh_r1kh_pull_frame f;
- const u8 *crypt;
- u8 *plain;
- struct ft_remote_r1kh *r1kh;
- struct ft_r0kh_r1kh_resp_frame resp, r;
- u8 pmk_r0[PMK_LEN];
- int pairwise;
+ const char *msgtype = "pull request";
+ u8 *plain = NULL, *packet = NULL;
+ size_t plain_len = 0, packet_len = 0;
+ struct ft_remote_r1kh *r1kh, *r1kh_wildcard;
+ const u8 *key;
+ size_t key_len;
+ int seq_ret;
+ const u8 *f_nonce, *f_r0kh_id, *f_r1kh_id, *f_s1kh_id, *f_pmk_r0_name;
+ size_t f_nonce_len, f_r0kh_id_len, f_r1kh_id_len, f_s1kh_id_len;
+ size_t f_pmk_r0_name_len;
+ const struct wpa_ft_pmk_r0_sa *r0;
+ int ret;
+ struct tlv_list resp[2];
+ struct tlv_list resp_auth[5];
+ struct ft_rrb_seq f_seq;
wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull");
- if (data_len < sizeof(f))
- return -1;
+ RRB_GET_AUTH(FT_RRB_R0KH_ID, r0kh_id, msgtype, -1);
+ wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID", f_r0kh_id, f_r0kh_id_len);
- r1kh = wpa_auth->conf.r1kh_list;
- while (r1kh) {
- if (os_memcmp(r1kh->addr, src_addr, ETH_ALEN) == 0)
- break;
- r1kh = r1kh->next;
+ if (wpa_ft_rrb_check_r0kh(wpa_auth, f_r0kh_id, f_r0kh_id_len)) {
+ wpa_printf(MSG_DEBUG, "FT: R0KH-ID mismatch");
+ goto out;
}
- if (r1kh == NULL) {
- wpa_printf(MSG_DEBUG, "FT: No matching R1KH address found for "
- "PMK-R1 pull source address " MACSTR,
- MAC2STR(src_addr));
- return -1;
+
+ RRB_GET_AUTH(FT_RRB_R1KH_ID, r1kh_id, msgtype, FT_R1KH_ID_LEN);
+ wpa_printf(MSG_DEBUG, "FT: R1KH-ID=" MACSTR, MAC2STR(f_r1kh_id));
+
+ wpa_ft_rrb_lookup_r1kh(wpa_auth, f_r1kh_id, &r1kh, &r1kh_wildcard);
+ if (r1kh) {
+ key = r1kh->key;
+ key_len = sizeof(r1kh->key);
+ } else if (r1kh_wildcard) {
+ wpa_printf(MSG_DEBUG, "FT: Using wildcard R1KH-ID");
+ key = r1kh_wildcard->key;
+ key_len = sizeof(r1kh_wildcard->key);
+ } else {
+ goto out;
}
- crypt = data + offsetof(struct ft_r0kh_r1kh_pull_frame, nonce);
- os_memset(&f, 0, sizeof(f));
- plain = ((u8 *) &f) + offsetof(struct ft_r0kh_r1kh_pull_frame, nonce);
- /* aes_unwrap() does not support inplace decryption, so use a temporary
- * buffer for the data. */
- if (aes_unwrap(r1kh->key, sizeof(r1kh->key),
- (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8,
- crypt, plain) < 0) {
- wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull "
- "request from " MACSTR, MAC2STR(src_addr));
- return -1;
+ RRB_GET_AUTH(FT_RRB_NONCE, nonce, "pull request", FT_RRB_NONCE_LEN);
+ wpa_hexdump(MSG_DEBUG, "FT: nonce", f_nonce, f_nonce_len);
+
+ seq_ret = FT_RRB_SEQ_DROP;
+ if (r1kh)
+ seq_ret = wpa_ft_rrb_seq_chk(r1kh->seq, src_addr, enc, enc_len,
+ auth, auth_len, msgtype, no_defer);
+ if (!no_defer && r1kh_wildcard &&
+ (!r1kh || os_memcmp(r1kh->addr, src_addr, ETH_ALEN) != 0)) {
+ /* wildcard: r1kh-id unknown or changed addr -> do a seq req */
+ seq_ret = FT_RRB_SEQ_DEFER;
}
- wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce",
- f.nonce, sizeof(f.nonce));
- wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR0Name",
- f.pmk_r0_name, WPA_PMK_NAME_LEN);
- wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR " S1KH-ID="
- MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id));
-
- os_memset(&resp, 0, sizeof(resp));
- resp.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
- resp.packet_type = FT_PACKET_R0KH_R1KH_RESP;
- resp.data_length = host_to_le16(FT_R0KH_R1KH_RESP_DATA_LEN);
- os_memcpy(resp.ap_address, wpa_auth->addr, ETH_ALEN);
-
- /* aes_wrap() does not support inplace encryption, so use a temporary
- * buffer for the data. */
- os_memcpy(r.nonce, f.nonce, sizeof(f.nonce));
- os_memcpy(r.r1kh_id, f.r1kh_id, FT_R1KH_ID_LEN);
- os_memcpy(r.s1kh_id, f.s1kh_id, ETH_ALEN);
- if (wpa_ft_fetch_pmk_r0(wpa_auth, f.s1kh_id, f.pmk_r0_name, pmk_r0,
- &pairwise) < 0) {
- wpa_printf(MSG_DEBUG, "FT: No matching PMKR0Name found for "
- "PMK-R1 pull");
- return -1;
+ if (seq_ret == FT_RRB_SEQ_DROP)
+ goto out;
+
+ if (wpa_ft_rrb_decrypt(key, key_len, enc, enc_len, auth, auth_len,
+ src_addr, FT_PACKET_R0KH_R1KH_PULL,
+ &plain, &plain_len) < 0)
+ goto out;
+
+ if (!r1kh)
+ r1kh = wpa_ft_rrb_add_r1kh(wpa_auth, r1kh_wildcard, src_addr,
+ f_r1kh_id,
+ wpa_auth->conf.rkh_pos_timeout);
+ if (!r1kh)
+ goto out;
+
+ if (seq_ret == FT_RRB_SEQ_DEFER) {
+ wpa_ft_rrb_seq_req(wpa_auth, r1kh->seq, src_addr, f_r0kh_id,
+ f_r0kh_id_len, f_r1kh_id, key, key_len,
+ enc, enc_len, auth, auth_len,
+ &wpa_ft_rrb_rx_pull);
+ goto out;
}
- wpa_derive_pmk_r1(pmk_r0, f.pmk_r0_name, f.r1kh_id, f.s1kh_id,
- r.pmk_r1, r.pmk_r1_name);
- wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", r.pmk_r1, PMK_LEN);
- wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", r.pmk_r1_name,
- WPA_PMK_NAME_LEN);
- r.pairwise = host_to_le16(pairwise);
- os_memset(r.pad, 0, sizeof(r.pad));
+ wpa_ft_rrb_seq_accept(wpa_auth, r1kh->seq, src_addr, auth, auth_len,
+ msgtype);
+ wpa_ft_rrb_r1kh_replenish(wpa_auth, r1kh,
+ wpa_auth->conf.rkh_pos_timeout);
- if (aes_wrap(r1kh->key, sizeof(r1kh->key),
- (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8,
- r.nonce, resp.nonce) < 0) {
- os_memset(pmk_r0, 0, PMK_LEN);
- return -1;
+ RRB_GET(FT_RRB_PMK_R0_NAME, pmk_r0_name, msgtype, WPA_PMK_NAME_LEN);
+ wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", f_pmk_r0_name,
+ f_pmk_r0_name_len);
+
+ RRB_GET(FT_RRB_S1KH_ID, s1kh_id, msgtype, ETH_ALEN);
+ wpa_printf(MSG_DEBUG, "FT: S1KH-ID=" MACSTR, MAC2STR(f_s1kh_id));
+
+ if (wpa_ft_new_seq(r1kh->seq, &f_seq) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to get seq num");
+ goto out;
+ }
+
+ wpa_printf(MSG_DEBUG, "FT: Send PMK-R1 pull response from " MACSTR
+ " to " MACSTR,
+ MAC2STR(wpa_auth->addr), MAC2STR(src_addr));
+
+ resp[0].type = FT_RRB_S1KH_ID;
+ resp[0].len = f_s1kh_id_len;
+ resp[0].data = f_s1kh_id;
+ resp[1].type = FT_RRB_LAST_EMPTY;
+ resp[1].len = 0;
+ resp[1].data = NULL;
+
+ resp_auth[0].type = FT_RRB_NONCE;
+ resp_auth[0].len = f_nonce_len;
+ resp_auth[0].data = f_nonce;
+ resp_auth[1].type = FT_RRB_SEQ;
+ resp_auth[1].len = sizeof(f_seq);
+ resp_auth[1].data = (u8 *) &f_seq;
+ resp_auth[2].type = FT_RRB_R0KH_ID;
+ resp_auth[2].len = f_r0kh_id_len;
+ resp_auth[2].data = f_r0kh_id;
+ resp_auth[3].type = FT_RRB_R1KH_ID;
+ resp_auth[3].len = f_r1kh_id_len;
+ resp_auth[3].data = f_r1kh_id;
+ resp_auth[4].type = FT_RRB_LAST_EMPTY;
+ resp_auth[4].len = 0;
+ resp_auth[4].data = NULL;
+
+ if (wpa_ft_fetch_pmk_r0(wpa_auth, f_s1kh_id, f_pmk_r0_name, &r0) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: No matching PMK-R0-Name found");
+ ret = wpa_ft_rrb_build(key, key_len, resp, NULL, resp_auth,
+ NULL, wpa_auth->addr,
+ FT_PACKET_R0KH_R1KH_RESP,
+ &packet, &packet_len);
+ } else {
+ ret = wpa_ft_rrb_build_r0(key, key_len, resp, r0, f_r1kh_id,
+ f_s1kh_id, resp_auth, wpa_auth->addr,
+ FT_PACKET_R0KH_R1KH_RESP,
+ &packet, &packet_len);
}
- os_memset(pmk_r0, 0, PMK_LEN);
+ if (!ret)
+ wpa_ft_rrb_oui_send(wpa_auth, src_addr,
+ FT_PACKET_R0KH_R1KH_RESP, packet,
+ packet_len);
- wpa_ft_rrb_send(wpa_auth, src_addr, (u8 *) &resp, sizeof(resp));
+out:
+ os_free(plain);
+ os_free(packet);
return 0;
}
-static void ft_pull_resp_cb_finish(void *eloop_ctx, void *timeout_ctx)
+/* @returns 0 on success
+ * -1 on error
+ * -2 if FR_RRB_PAIRWISE is missing
+ */
+static int wpa_ft_rrb_rx_r1(struct wpa_authenticator *wpa_auth,
+ const u8 *src_addr, u8 type,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ const char *msgtype, u8 *s1kh_id_out,
+ int (*cb)(struct wpa_authenticator *wpa_auth,
+ const u8 *src_addr,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ int no_defer))
+{
+ u8 *plain = NULL;
+ size_t plain_len = 0;
+ struct ft_remote_r0kh *r0kh, *r0kh_wildcard;
+ const u8 *key;
+ size_t key_len;
+ int seq_ret;
+ const u8 *f_r1kh_id, *f_s1kh_id, *f_r0kh_id;
+ const u8 *f_pmk_r1_name, *f_pairwise, *f_pmk_r1;
+ const u8 *f_expires_in;
+ size_t f_r1kh_id_len, f_s1kh_id_len, f_r0kh_id_len;
+ const u8 *f_identity, *f_radius_cui;
+ const u8 *f_session_timeout;
+ size_t f_pmk_r1_name_len, f_pairwise_len, f_pmk_r1_len;
+ size_t f_expires_in_len;
+ size_t f_identity_len, f_radius_cui_len;
+ size_t f_session_timeout_len;
+ int pairwise;
+ int ret = -1;
+ int expires_in;
+ int session_timeout;
+ struct vlan_description vlan;
+ size_t pmk_r1_len;
+
+ RRB_GET_AUTH(FT_RRB_R0KH_ID, r0kh_id, msgtype, -1);
+ wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID", f_r0kh_id, f_r0kh_id_len);
+
+ RRB_GET_AUTH(FT_RRB_R1KH_ID, r1kh_id, msgtype, FT_R1KH_ID_LEN);
+ wpa_printf(MSG_DEBUG, "FT: R1KH-ID=" MACSTR, MAC2STR(f_r1kh_id));
+
+ if (wpa_ft_rrb_check_r1kh(wpa_auth, f_r1kh_id)) {
+ wpa_printf(MSG_DEBUG, "FT: R1KH-ID mismatch");
+ goto out;
+ }
+
+ wpa_ft_rrb_lookup_r0kh(wpa_auth, f_r0kh_id, f_r0kh_id_len, &r0kh,
+ &r0kh_wildcard);
+ if (r0kh) {
+ key = r0kh->key;
+ key_len = sizeof(r0kh->key);
+ } else if (r0kh_wildcard) {
+ wpa_printf(MSG_DEBUG, "FT: Using wildcard R0KH-ID");
+ key = r0kh_wildcard->key;
+ key_len = sizeof(r0kh_wildcard->key);
+ } else {
+ goto out;
+ }
+
+ seq_ret = FT_RRB_SEQ_DROP;
+ if (r0kh) {
+ seq_ret = wpa_ft_rrb_seq_chk(r0kh->seq, src_addr, enc, enc_len,
+ auth, auth_len, msgtype,
+ cb ? 0 : 1);
+ }
+ if (cb && r0kh_wildcard &&
+ (!r0kh || os_memcmp(r0kh->addr, src_addr, ETH_ALEN) != 0)) {
+ /* wildcard: r0kh-id unknown or changed addr -> do a seq req */
+ seq_ret = FT_RRB_SEQ_DEFER;
+ }
+
+ if (seq_ret == FT_RRB_SEQ_DROP)
+ goto out;
+
+ if (wpa_ft_rrb_decrypt(key, key_len, enc, enc_len, auth, auth_len,
+ src_addr, type, &plain, &plain_len) < 0)
+ goto out;
+
+ if (!r0kh)
+ r0kh = wpa_ft_rrb_add_r0kh(wpa_auth, r0kh_wildcard, src_addr,
+ f_r0kh_id, f_r0kh_id_len,
+ wpa_auth->conf.rkh_pos_timeout);
+ if (!r0kh)
+ goto out;
+
+ if (seq_ret == FT_RRB_SEQ_DEFER) {
+ wpa_ft_rrb_seq_req(wpa_auth, r0kh->seq, src_addr, f_r0kh_id,
+ f_r0kh_id_len, f_r1kh_id, key, key_len,
+ enc, enc_len, auth, auth_len, cb);
+ goto out;
+ }
+
+ wpa_ft_rrb_seq_accept(wpa_auth, r0kh->seq, src_addr, auth, auth_len,
+ msgtype);
+ wpa_ft_rrb_r0kh_replenish(wpa_auth, r0kh,
+ wpa_auth->conf.rkh_pos_timeout);
+
+ RRB_GET(FT_RRB_S1KH_ID, s1kh_id, msgtype, ETH_ALEN);
+ wpa_printf(MSG_DEBUG, "FT: S1KH-ID=" MACSTR, MAC2STR(f_s1kh_id));
+
+ if (s1kh_id_out)
+ os_memcpy(s1kh_id_out, f_s1kh_id, ETH_ALEN);
+
+ ret = -2;
+ RRB_GET(FT_RRB_PAIRWISE, pairwise, msgtype, sizeof(le16));
+ wpa_hexdump(MSG_DEBUG, "FT: pairwise", f_pairwise, f_pairwise_len);
+
+ ret = -1;
+ RRB_GET(FT_RRB_PMK_R1_NAME, pmk_r1_name, msgtype, WPA_PMK_NAME_LEN);
+ wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name",
+ f_pmk_r1_name, WPA_PMK_NAME_LEN);
+
+ pmk_r1_len = PMK_LEN;
+ if (wpa_ft_rrb_get_tlv(plain, plain_len, FT_RRB_PMK_R1, &f_pmk_r1_len,
+ &f_pmk_r1) == 0 &&
+ (f_pmk_r1_len == PMK_LEN || f_pmk_r1_len == SHA384_MAC_LEN))
+ pmk_r1_len = f_pmk_r1_len;
+ RRB_GET(FT_RRB_PMK_R1, pmk_r1, msgtype, pmk_r1_len);
+ wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", f_pmk_r1, pmk_r1_len);
+
+ pairwise = WPA_GET_LE16(f_pairwise);
+
+ RRB_GET_OPTIONAL(FT_RRB_EXPIRES_IN, expires_in, msgtype,
+ sizeof(le16));
+ if (f_expires_in)
+ expires_in = WPA_GET_LE16(f_expires_in);
+ else
+ expires_in = 0;
+
+ wpa_printf(MSG_DEBUG, "FT: PMK-R1 %s - expires_in=%d", msgtype,
+ expires_in);
+
+ if (wpa_ft_rrb_get_tlv_vlan(plain, plain_len, &vlan) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Cannot parse vlan");
+ wpa_ft_rrb_dump(plain, plain_len);
+ goto out;
+ }
+
+ wpa_printf(MSG_DEBUG, "FT: vlan %d%s",
+ le_to_host16(vlan.untagged), vlan.tagged[0] ? "+" : "");
+
+ RRB_GET_OPTIONAL(FT_RRB_IDENTITY, identity, msgtype, -1);
+ if (f_identity)
+ wpa_hexdump_ascii(MSG_DEBUG, "FT: Identity", f_identity,
+ f_identity_len);
+
+ RRB_GET_OPTIONAL(FT_RRB_RADIUS_CUI, radius_cui, msgtype, -1);
+ if (f_radius_cui)
+ wpa_hexdump_ascii(MSG_DEBUG, "FT: CUI", f_radius_cui,
+ f_radius_cui_len);
+
+ RRB_GET_OPTIONAL(FT_RRB_SESSION_TIMEOUT, session_timeout, msgtype,
+ sizeof(le32));
+ if (f_session_timeout)
+ session_timeout = WPA_GET_LE32(f_session_timeout);
+ else
+ session_timeout = 0;
+ wpa_printf(MSG_DEBUG, "FT: session_timeout %d", session_timeout);
+
+ if (wpa_ft_store_pmk_r1(wpa_auth, f_s1kh_id, f_pmk_r1, pmk_r1_len,
+ f_pmk_r1_name,
+ pairwise, &vlan, expires_in, session_timeout,
+ f_identity, f_identity_len, f_radius_cui,
+ f_radius_cui_len) < 0)
+ goto out;
+
+ ret = 0;
+out:
+ bin_clear_free(plain, plain_len);
+
+ return ret;
+
+}
+
+
+static void ft_finish_pull(struct wpa_state_machine *sm)
{
- struct wpa_state_machine *sm = eloop_ctx;
int res;
u8 *resp_ies;
size_t resp_ies_len;
u16 status;
+ if (!sm->ft_pending_cb || !sm->ft_pending_req_ies)
+ return;
+
res = wpa_ft_process_auth_req(sm, wpabuf_head(sm->ft_pending_req_ies),
wpabuf_len(sm->ft_pending_req_ies),
&resp_ies, &resp_ies_len);
+ if (res < 0) {
+ /* this loop is broken by ft_pending_pull_left_retries */
+ wpa_printf(MSG_DEBUG,
+ "FT: Callback postponed until response is available");
+ return;
+ }
wpabuf_free(sm->ft_pending_req_ies);
sm->ft_pending_req_ies = NULL;
- if (res < 0)
- res = WLAN_STATUS_UNSPECIFIED_FAILURE;
status = res;
wpa_printf(MSG_DEBUG, "FT: Postponed auth callback result for " MACSTR
" - status %u", MAC2STR(sm->addr), status);
}
-static int ft_pull_resp_cb(struct wpa_state_machine *sm, void *ctx)
+struct ft_get_sta_ctx {
+ const u8 *nonce;
+ const u8 *s1kh_id;
+ struct wpa_state_machine *sm;
+};
+
+
+static int ft_get_sta_cb(struct wpa_state_machine *sm, void *ctx)
{
- struct ft_r0kh_r1kh_resp_frame *frame = ctx;
+ struct ft_get_sta_ctx *info = ctx;
- if (os_memcmp(frame->s1kh_id, sm->addr, ETH_ALEN) != 0)
- return 0;
- if (os_memcmp(frame->nonce, sm->ft_pending_pull_nonce,
- FT_R0KH_R1KH_PULL_NONCE_LEN) != 0)
- return 0;
- if (sm->ft_pending_cb == NULL || sm->ft_pending_req_ies == NULL)
+ if ((info->s1kh_id &&
+ os_memcmp(info->s1kh_id, sm->addr, ETH_ALEN) != 0) ||
+ os_memcmp(info->nonce, sm->ft_pending_pull_nonce,
+ FT_RRB_NONCE_LEN) != 0 ||
+ sm->ft_pending_cb == NULL || sm->ft_pending_req_ies == NULL)
return 0;
- wpa_printf(MSG_DEBUG, "FT: Response to a pending pull request for "
- MACSTR " - process from timeout", MAC2STR(sm->addr));
- eloop_register_timeout(0, 0, ft_pull_resp_cb_finish, sm, NULL);
+ info->sm = sm;
+
return 1;
}
static int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth,
const u8 *src_addr,
- const u8 *data, size_t data_len)
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ int no_defer)
{
- struct ft_r0kh_r1kh_resp_frame f;
- const u8 *crypt;
- u8 *plain;
- struct ft_remote_r0kh *r0kh;
- int pairwise, res;
+ const char *msgtype = "pull response";
+ int nak, ret = -1;
+ struct ft_get_sta_ctx ctx;
+ u8 s1kh_id[ETH_ALEN];
+ const u8 *f_nonce;
+ size_t f_nonce_len;
wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull response");
- if (data_len < sizeof(f))
- return -1;
+ RRB_GET_AUTH(FT_RRB_NONCE, nonce, msgtype, FT_RRB_NONCE_LEN);
+ wpa_hexdump(MSG_DEBUG, "FT: nonce", f_nonce, f_nonce_len);
- r0kh = wpa_auth->conf.r0kh_list;
- while (r0kh) {
- if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0)
- break;
- r0kh = r0kh->next;
- }
- if (r0kh == NULL) {
- wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for "
- "PMK-R0 pull response source address " MACSTR,
- MAC2STR(src_addr));
+ os_memset(&ctx, 0, sizeof(ctx));
+ ctx.nonce = f_nonce;
+ if (!wpa_auth_for_each_sta(wpa_auth, ft_get_sta_cb, &ctx)) {
+ /* nonce not found */
+ wpa_printf(MSG_DEBUG, "FT: Invalid nonce");
return -1;
}
- crypt = data + offsetof(struct ft_r0kh_r1kh_resp_frame, nonce);
- os_memset(&f, 0, sizeof(f));
- plain = ((u8 *) &f) + offsetof(struct ft_r0kh_r1kh_resp_frame, nonce);
- /* aes_unwrap() does not support inplace decryption, so use a temporary
- * buffer for the data. */
- if (aes_unwrap(r0kh->key, sizeof(r0kh->key),
- (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8,
- crypt, plain) < 0) {
- wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull "
- "response from " MACSTR, MAC2STR(src_addr));
- return -1;
+ ret = wpa_ft_rrb_rx_r1(wpa_auth, src_addr, FT_PACKET_R0KH_R1KH_RESP,
+ enc, enc_len, auth, auth_len, msgtype, s1kh_id,
+ no_defer ? NULL : &wpa_ft_rrb_rx_resp);
+ if (ret == -2) {
+ ret = 0;
+ nak = 1;
+ } else {
+ nak = 0;
}
-
- if (os_memcmp_const(f.r1kh_id, wpa_auth->conf.r1_key_holder,
- FT_R1KH_ID_LEN) != 0) {
- wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull response did not use a "
- "matching R1KH-ID");
+ if (ret < 0)
return -1;
- }
-
- pairwise = le_to_host16(f.pairwise);
- wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce",
- f.nonce, sizeof(f.nonce));
- wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR " S1KH-ID="
- MACSTR " pairwise=0x%x",
- MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id), pairwise);
- wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 pull - PMK-R1",
- f.pmk_r1, PMK_LEN);
- wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR1Name",
- f.pmk_r1_name, WPA_PMK_NAME_LEN);
- res = wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name,
- pairwise);
- wpa_printf(MSG_DEBUG, "FT: Look for pending pull request");
- wpa_auth_for_each_sta(wpa_auth, ft_pull_resp_cb, &f);
- os_memset(f.pmk_r1, 0, PMK_LEN);
+ ctx.s1kh_id = s1kh_id;
+ if (wpa_auth_for_each_sta(wpa_auth, ft_get_sta_cb, &ctx)) {
+ wpa_printf(MSG_DEBUG,
+ "FT: Response to a pending pull request for " MACSTR,
+ MAC2STR(ctx.sm->addr));
+ eloop_cancel_timeout(wpa_ft_expire_pull, ctx.sm, NULL);
+ if (nak)
+ ctx.sm->ft_pending_pull_left_retries = 0;
+ ft_finish_pull(ctx.sm);
+ }
- return res ? 0 : -1;
+out:
+ return ret;
}
static int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth,
const u8 *src_addr,
- const u8 *data, size_t data_len)
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len, int no_defer)
{
- struct ft_r0kh_r1kh_push_frame f;
- const u8 *crypt;
- u8 *plain;
- struct ft_remote_r0kh *r0kh;
- struct os_time now;
- os_time_t tsend;
- int pairwise;
+ const char *msgtype = "push";
wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 push");
- if (data_len < sizeof(f))
+ if (wpa_ft_rrb_rx_r1(wpa_auth, src_addr, FT_PACKET_R0KH_R1KH_PUSH,
+ enc, enc_len, auth, auth_len, msgtype, NULL,
+ no_defer ? NULL : wpa_ft_rrb_rx_push) < 0)
return -1;
- r0kh = wpa_auth->conf.r0kh_list;
- while (r0kh) {
- if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0)
- break;
- r0kh = r0kh->next;
+ return 0;
+}
+
+
+static int wpa_ft_rrb_rx_seq(struct wpa_authenticator *wpa_auth,
+ const u8 *src_addr, int type,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ struct ft_remote_seq **rkh_seq,
+ u8 **key, size_t *key_len,
+ struct ft_remote_r0kh **r0kh_out,
+ struct ft_remote_r1kh **r1kh_out,
+ struct ft_remote_r0kh **r0kh_wildcard_out,
+ struct ft_remote_r1kh **r1kh_wildcard_out)
+{
+ struct ft_remote_r0kh *r0kh = NULL;
+ struct ft_remote_r1kh *r1kh = NULL;
+ const u8 *f_r0kh_id, *f_r1kh_id;
+ size_t f_r0kh_id_len, f_r1kh_id_len;
+ int to_r0kh, to_r1kh;
+ u8 *plain = NULL;
+ size_t plain_len = 0;
+ struct ft_remote_r0kh *r0kh_wildcard;
+ struct ft_remote_r1kh *r1kh_wildcard;
+
+ RRB_GET_AUTH(FT_RRB_R0KH_ID, r0kh_id, "seq", -1);
+ RRB_GET_AUTH(FT_RRB_R1KH_ID, r1kh_id, "seq", FT_R1KH_ID_LEN);
+
+ to_r0kh = !wpa_ft_rrb_check_r0kh(wpa_auth, f_r0kh_id, f_r0kh_id_len);
+ to_r1kh = !wpa_ft_rrb_check_r1kh(wpa_auth, f_r1kh_id);
+
+ if (to_r0kh && to_r1kh) {
+ wpa_printf(MSG_DEBUG, "FT: seq - local R0KH-ID and R1KH-ID");
+ goto out;
}
- if (r0kh == NULL) {
- wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for "
- "PMK-R0 push source address " MACSTR,
- MAC2STR(src_addr));
- return -1;
+
+ if (!to_r0kh && !to_r1kh) {
+ wpa_printf(MSG_DEBUG, "FT: seq - remote R0KH-ID and R1KH-ID");
+ goto out;
}
- crypt = data + offsetof(struct ft_r0kh_r1kh_push_frame, timestamp);
- os_memset(&f, 0, sizeof(f));
- plain = ((u8 *) &f) + offsetof(struct ft_r0kh_r1kh_push_frame,
- timestamp);
- /* aes_unwrap() does not support inplace decryption, so use a temporary
- * buffer for the data. */
- if (aes_unwrap(r0kh->key, sizeof(r0kh->key),
- (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8,
- crypt, plain) < 0) {
- wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 push from "
- MACSTR, MAC2STR(src_addr));
- return -1;
+ if (!to_r0kh) {
+ wpa_ft_rrb_lookup_r0kh(wpa_auth, f_r0kh_id, f_r0kh_id_len,
+ &r0kh, &r0kh_wildcard);
+ if (!r0kh_wildcard &&
+ (!r0kh || os_memcmp(r0kh->addr, src_addr, ETH_ALEN) != 0)) {
+ wpa_hexdump(MSG_DEBUG, "FT: Did not find R0KH-ID",
+ f_r0kh_id, f_r0kh_id_len);
+ goto out;
+ }
+ if (r0kh) {
+ *key = r0kh->key;
+ *key_len = sizeof(r0kh->key);
+ } else {
+ *key = r0kh_wildcard->key;
+ *key_len = sizeof(r0kh_wildcard->key);
+ }
}
- os_get_time(&now);
- tsend = WPA_GET_LE32(f.timestamp);
- if ((now.sec > tsend && now.sec - tsend > 60) ||
- (now.sec < tsend && tsend - now.sec > 60)) {
- wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not have a valid "
- "timestamp: sender time %d own time %d\n",
- (int) tsend, (int) now.sec);
- return -1;
+ if (!to_r1kh) {
+ wpa_ft_rrb_lookup_r1kh(wpa_auth, f_r1kh_id, &r1kh,
+ &r1kh_wildcard);
+ if (!r1kh_wildcard &&
+ (!r1kh || os_memcmp(r1kh->addr, src_addr, ETH_ALEN) != 0)) {
+ wpa_hexdump(MSG_DEBUG, "FT: Did not find R1KH-ID",
+ f_r1kh_id, FT_R1KH_ID_LEN);
+ goto out;
+ }
+ if (r1kh) {
+ *key = r1kh->key;
+ *key_len = sizeof(r1kh->key);
+ } else {
+ *key = r1kh_wildcard->key;
+ *key_len = sizeof(r1kh_wildcard->key);
+ }
}
- if (os_memcmp_const(f.r1kh_id, wpa_auth->conf.r1_key_holder,
- FT_R1KH_ID_LEN) != 0) {
- wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not use a matching "
- "R1KH-ID (received " MACSTR " own " MACSTR ")",
- MAC2STR(f.r1kh_id),
- MAC2STR(wpa_auth->conf.r1_key_holder));
- return -1;
+ if (wpa_ft_rrb_decrypt(*key, *key_len, enc, enc_len, auth, auth_len,
+ src_addr, type, &plain, &plain_len) < 0)
+ goto out;
+
+ os_free(plain);
+
+ if (!to_r0kh) {
+ if (!r0kh)
+ r0kh = wpa_ft_rrb_add_r0kh(wpa_auth, r0kh_wildcard,
+ src_addr, f_r0kh_id,
+ f_r0kh_id_len,
+ ftRRBseqTimeout);
+ if (!r0kh)
+ goto out;
+
+ wpa_ft_rrb_r0kh_replenish(wpa_auth, r0kh, ftRRBseqTimeout);
+ *rkh_seq = r0kh->seq;
+ if (r0kh_out)
+ *r0kh_out = r0kh;
+ if (r0kh_wildcard_out)
+ *r0kh_wildcard_out = r0kh_wildcard;
+ }
+
+ if (!to_r1kh) {
+ if (!r1kh)
+ r1kh = wpa_ft_rrb_add_r1kh(wpa_auth, r1kh_wildcard,
+ src_addr, f_r1kh_id,
+ ftRRBseqTimeout);
+ if (!r1kh)
+ goto out;
+
+ wpa_ft_rrb_r1kh_replenish(wpa_auth, r1kh, ftRRBseqTimeout);
+ *rkh_seq = r1kh->seq;
+ if (r1kh_out)
+ *r1kh_out = r1kh;
+ if (r1kh_wildcard_out)
+ *r1kh_wildcard_out = r1kh_wildcard;
+ }
+
+ return 0;
+out:
+ return -1;
+}
+
+
+static int wpa_ft_rrb_rx_seq_req(struct wpa_authenticator *wpa_auth,
+ const u8 *src_addr,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ int no_defer)
+{
+ int ret = -1;
+ struct ft_rrb_seq f_seq;
+ const u8 *f_nonce, *f_r0kh_id, *f_r1kh_id;
+ size_t f_nonce_len, f_r0kh_id_len, f_r1kh_id_len;
+ struct ft_remote_seq *rkh_seq = NULL;
+ u8 *packet = NULL, *key = NULL;
+ size_t packet_len = 0, key_len = 0;
+ struct tlv_list seq_resp_auth[5];
+
+ wpa_printf(MSG_DEBUG, "FT: Received sequence number request");
+
+ if (wpa_ft_rrb_rx_seq(wpa_auth, src_addr, FT_PACKET_R0KH_R1KH_SEQ_REQ,
+ enc, enc_len, auth, auth_len, &rkh_seq, &key,
+ &key_len, NULL, NULL, NULL, NULL) < 0)
+ goto out;
+
+ RRB_GET_AUTH(FT_RRB_NONCE, nonce, "seq request", FT_RRB_NONCE_LEN);
+ wpa_hexdump(MSG_DEBUG, "FT: seq request - nonce", f_nonce, f_nonce_len);
+
+ RRB_GET_AUTH(FT_RRB_R0KH_ID, r0kh_id, "seq", -1);
+ RRB_GET_AUTH(FT_RRB_R1KH_ID, r1kh_id, "seq", FT_R1KH_ID_LEN);
+
+ if (wpa_ft_new_seq(rkh_seq, &f_seq) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to get seq num");
+ goto out;
+ }
+
+ wpa_printf(MSG_DEBUG, "FT: Send sequence number response from " MACSTR
+ " to " MACSTR,
+ MAC2STR(wpa_auth->addr), MAC2STR(src_addr));
+
+ seq_resp_auth[0].type = FT_RRB_NONCE;
+ seq_resp_auth[0].len = f_nonce_len;
+ seq_resp_auth[0].data = f_nonce;
+ seq_resp_auth[1].type = FT_RRB_SEQ;
+ seq_resp_auth[1].len = sizeof(f_seq);
+ seq_resp_auth[1].data = (u8 *) &f_seq;
+ seq_resp_auth[2].type = FT_RRB_R0KH_ID;
+ seq_resp_auth[2].len = f_r0kh_id_len;
+ seq_resp_auth[2].data = f_r0kh_id;
+ seq_resp_auth[3].type = FT_RRB_R1KH_ID;
+ seq_resp_auth[3].len = FT_R1KH_ID_LEN;
+ seq_resp_auth[3].data = f_r1kh_id;
+ seq_resp_auth[4].type = FT_RRB_LAST_EMPTY;
+ seq_resp_auth[4].len = 0;
+ seq_resp_auth[4].data = NULL;
+
+ if (wpa_ft_rrb_build(key, key_len, NULL, NULL, seq_resp_auth, NULL,
+ wpa_auth->addr, FT_PACKET_R0KH_R1KH_SEQ_RESP,
+ &packet, &packet_len) < 0)
+ goto out;
+
+ wpa_ft_rrb_oui_send(wpa_auth, src_addr,
+ FT_PACKET_R0KH_R1KH_SEQ_RESP, packet,
+ packet_len);
+
+out:
+ os_free(packet);
+
+ return ret;
+}
+
+
+static int wpa_ft_rrb_rx_seq_resp(struct wpa_authenticator *wpa_auth,
+ const u8 *src_addr,
+ const u8 *enc, size_t enc_len,
+ const u8 *auth, size_t auth_len,
+ int no_defer)
+{
+ u8 *key = NULL;
+ size_t key_len = 0;
+ struct ft_remote_r0kh *r0kh = NULL, *r0kh_wildcard = NULL;
+ struct ft_remote_r1kh *r1kh = NULL, *r1kh_wildcard = NULL;
+ const u8 *f_nonce, *f_seq;
+ size_t f_nonce_len, f_seq_len;
+ struct ft_remote_seq *rkh_seq = NULL;
+ struct ft_remote_item *item;
+ struct os_reltime now, now_remote;
+ int seq_ret, found;
+ const struct ft_rrb_seq *msg_both;
+ u32 msg_dom, msg_seq;
+
+ wpa_printf(MSG_DEBUG, "FT: Received sequence number response");
+
+ if (wpa_ft_rrb_rx_seq(wpa_auth, src_addr, FT_PACKET_R0KH_R1KH_SEQ_RESP,
+ enc, enc_len, auth, auth_len, &rkh_seq, &key,
+ &key_len, &r0kh, &r1kh, &r0kh_wildcard,
+ &r1kh_wildcard) < 0)
+ goto out;
+
+ RRB_GET_AUTH(FT_RRB_NONCE, nonce, "seq response", FT_RRB_NONCE_LEN);
+ wpa_hexdump(MSG_DEBUG, "FT: seq response - nonce", f_nonce,
+ f_nonce_len);
+
+ found = 0;
+ dl_list_for_each(item, &rkh_seq->rx.queue, struct ft_remote_item,
+ list) {
+ if (os_memcmp_const(f_nonce, item->nonce,
+ FT_RRB_NONCE_LEN) != 0 ||
+ os_get_reltime(&now) < 0 ||
+ os_reltime_expired(&now, &item->nonce_ts, ftRRBseqTimeout))
+ continue;
+
+ found = 1;
+ break;
+ }
+ if (!found) {
+ wpa_printf(MSG_DEBUG, "FT: seq response - bad nonce");
+ goto out;
+ }
+
+ if (r0kh) {
+ wpa_ft_rrb_r0kh_replenish(wpa_auth, r0kh,
+ wpa_auth->conf.rkh_pos_timeout);
+ if (r0kh_wildcard)
+ os_memcpy(r0kh->addr, src_addr, ETH_ALEN);
+ }
+
+ if (r1kh) {
+ wpa_ft_rrb_r1kh_replenish(wpa_auth, r1kh,
+ wpa_auth->conf.rkh_pos_timeout);
+ if (r1kh_wildcard)
+ os_memcpy(r1kh->addr, src_addr, ETH_ALEN);
}
- pairwise = le_to_host16(f.pairwise);
- wpa_printf(MSG_DEBUG, "FT: PMK-R1 push - R1KH-ID=" MACSTR " S1KH-ID="
- MACSTR " pairwise=0x%x",
- MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id), pairwise);
- wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 push - PMK-R1",
- f.pmk_r1, PMK_LEN);
- wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 push - PMKR1Name",
- f.pmk_r1_name, WPA_PMK_NAME_LEN);
+ seq_ret = wpa_ft_rrb_seq_chk(rkh_seq, src_addr, enc, enc_len, auth,
+ auth_len, "seq response", 1);
+ if (seq_ret == FT_RRB_SEQ_OK) {
+ wpa_printf(MSG_DEBUG, "FT: seq response - valid seq number");
+ wpa_ft_rrb_seq_accept(wpa_auth, rkh_seq, src_addr, auth,
+ auth_len, "seq response");
+ } else {
+ wpa_printf(MSG_DEBUG, "FT: seq response - reset seq number");
+
+ RRB_GET_AUTH(FT_RRB_SEQ, seq, "seq response",
+ sizeof(*msg_both));
+ msg_both = (const struct ft_rrb_seq *) f_seq;
+
+ msg_dom = le_to_host32(msg_both->dom);
+ msg_seq = le_to_host32(msg_both->seq);
+ now_remote.sec = le_to_host32(msg_both->ts);
+ now_remote.usec = 0;
+
+ rkh_seq->rx.num_last = 2;
+ rkh_seq->rx.dom = msg_dom;
+ rkh_seq->rx.offsetidx = 0;
+ /* Accept some older, possibly cached packets as well */
+ rkh_seq->rx.last[0] = msg_seq - FT_REMOTE_SEQ_BACKLOG -
+ dl_list_len(&rkh_seq->rx.queue);
+ rkh_seq->rx.last[1] = msg_seq;
+
+ /* local time - offset = remote time
+ * <=> local time - remote time = offset */
+ os_reltime_sub(&now, &now_remote, &rkh_seq->rx.time_offset);
+ }
- wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name,
- pairwise);
- os_memset(f.pmk_r1, 0, PMK_LEN);
+ wpa_ft_rrb_seq_flush(wpa_auth, rkh_seq, 1);
return 0;
+out:
+ return -1;
}
return -1;
}
- if (frame->packet_type == FT_PACKET_R0KH_R1KH_PULL)
- return wpa_ft_rrb_rx_pull(wpa_auth, src_addr, data, data_len);
- if (frame->packet_type == FT_PACKET_R0KH_R1KH_RESP)
- return wpa_ft_rrb_rx_resp(wpa_auth, src_addr, data, data_len);
- if (frame->packet_type == FT_PACKET_R0KH_R1KH_PUSH)
- return wpa_ft_rrb_rx_push(wpa_auth, src_addr, data, data_len);
-
wpa_hexdump(MSG_MSGDUMP, "FT: RRB - FT Action frame", pos, alen);
if (alen < 1 + 1 + 2 * ETH_ALEN) {
}
-static void wpa_ft_generate_pmk_r1(struct wpa_authenticator *wpa_auth,
- struct wpa_ft_pmk_r0_sa *pmk_r0,
- struct ft_remote_r1kh *r1kh,
- const u8 *s1kh_id, int pairwise)
-{
- struct ft_r0kh_r1kh_push_frame frame, f;
- struct os_time now;
- const u8 *plain;
- u8 *crypt;
-
- os_memset(&frame, 0, sizeof(frame));
- frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
- frame.packet_type = FT_PACKET_R0KH_R1KH_PUSH;
- frame.data_length = host_to_le16(FT_R0KH_R1KH_PUSH_DATA_LEN);
- os_memcpy(frame.ap_address, wpa_auth->addr, ETH_ALEN);
-
- /* aes_wrap() does not support inplace encryption, so use a temporary
- * buffer for the data. */
- os_memcpy(f.r1kh_id, r1kh->id, FT_R1KH_ID_LEN);
- os_memcpy(f.s1kh_id, s1kh_id, ETH_ALEN);
- os_memcpy(f.pmk_r0_name, pmk_r0->pmk_r0_name, WPA_PMK_NAME_LEN);
- wpa_derive_pmk_r1(pmk_r0->pmk_r0, pmk_r0->pmk_r0_name, r1kh->id,
- s1kh_id, f.pmk_r1, f.pmk_r1_name);
- wpa_printf(MSG_DEBUG, "FT: R1KH-ID " MACSTR, MAC2STR(r1kh->id));
- wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", f.pmk_r1, PMK_LEN);
- wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", f.pmk_r1_name,
- WPA_PMK_NAME_LEN);
- os_get_time(&now);
- WPA_PUT_LE32(f.timestamp, now.sec);
- f.pairwise = host_to_le16(pairwise);
- os_memset(f.pad, 0, sizeof(f.pad));
- plain = ((const u8 *) &f) + offsetof(struct ft_r0kh_r1kh_push_frame,
- timestamp);
- crypt = ((u8 *) &frame) + offsetof(struct ft_r0kh_r1kh_push_frame,
- timestamp);
- if (aes_wrap(r1kh->key, sizeof(r1kh->key),
- (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8,
- plain, crypt) < 0)
+void wpa_ft_rrb_oui_rx(struct wpa_authenticator *wpa_auth, const u8 *src_addr,
+ const u8 *dst_addr, u8 oui_suffix, const u8 *data,
+ size_t data_len)
+{
+ const u8 *auth, *enc;
+ size_t alen, elen;
+ int no_defer = 0;
+
+ wpa_printf(MSG_DEBUG, "FT: RRB-OUI(" MACSTR
+ ") received frame from remote AP "
+ MACSTR " oui_suffix=%u dst=" MACSTR,
+ MAC2STR(wpa_auth->addr), MAC2STR(src_addr), oui_suffix,
+ MAC2STR(dst_addr));
+ wpa_hexdump(MSG_MSGDUMP, "FT: RRB frame payload", data, data_len);
+
+ if (is_multicast_ether_addr(src_addr)) {
+ wpa_printf(MSG_DEBUG,
+ "FT: RRB-OUI received frame from multicast address "
+ MACSTR, MAC2STR(src_addr));
+ return;
+ }
+
+ if (is_multicast_ether_addr(dst_addr))
+ no_defer = 1;
+
+ if (data_len < sizeof(u16)) {
+ wpa_printf(MSG_DEBUG, "FT: RRB-OUI frame too short");
+ return;
+ }
+
+ alen = WPA_GET_LE16(data);
+ if (data_len < sizeof(u16) + alen) {
+ wpa_printf(MSG_DEBUG, "FT: RRB-OUI frame too short");
return;
+ }
+
+ auth = data + sizeof(u16);
+ wpa_hexdump(MSG_MSGDUMP, "FT: Authenticated payload", auth, alen);
+ enc = data + sizeof(u16) + alen;
+ elen = data_len - sizeof(u16) - alen;
+ wpa_hexdump(MSG_MSGDUMP, "FT: Encrypted payload", enc, elen);
+
+ switch (oui_suffix) {
+ case FT_PACKET_R0KH_R1KH_PULL:
+ wpa_ft_rrb_rx_pull(wpa_auth, src_addr, enc, elen, auth, alen,
+ no_defer);
+ break;
+ case FT_PACKET_R0KH_R1KH_RESP:
+ wpa_ft_rrb_rx_resp(wpa_auth, src_addr, enc, elen, auth, alen,
+ no_defer);
+ break;
+ case FT_PACKET_R0KH_R1KH_PUSH:
+ wpa_ft_rrb_rx_push(wpa_auth, src_addr, enc, elen, auth, alen,
+ no_defer);
+ break;
+ case FT_PACKET_R0KH_R1KH_SEQ_REQ:
+ wpa_ft_rrb_rx_seq_req(wpa_auth, src_addr, enc, elen, auth, alen,
+ no_defer);
+ break;
+ case FT_PACKET_R0KH_R1KH_SEQ_RESP:
+ wpa_ft_rrb_rx_seq_resp(wpa_auth, src_addr, enc, elen, auth,
+ alen, no_defer);
+ break;
+ }
+}
+
+
+static int wpa_ft_generate_pmk_r1(struct wpa_authenticator *wpa_auth,
+ struct wpa_ft_pmk_r0_sa *pmk_r0,
+ struct ft_remote_r1kh *r1kh,
+ const u8 *s1kh_id)
+{
+ u8 *packet;
+ size_t packet_len;
+ struct ft_rrb_seq f_seq;
+ struct tlv_list push[] = {
+ { .type = FT_RRB_S1KH_ID, .len = ETH_ALEN,
+ .data = s1kh_id },
+ { .type = FT_RRB_PMK_R0_NAME, .len = WPA_PMK_NAME_LEN,
+ .data = pmk_r0->pmk_r0_name },
+ { .type = FT_RRB_LAST_EMPTY, .len = 0, .data = NULL },
+ };
+ struct tlv_list push_auth[] = {
+ { .type = FT_RRB_SEQ, .len = sizeof(f_seq),
+ .data = (u8 *) &f_seq },
+ { .type = FT_RRB_R0KH_ID,
+ .len = wpa_auth->conf.r0_key_holder_len,
+ .data = wpa_auth->conf.r0_key_holder },
+ { .type = FT_RRB_R1KH_ID, .len = FT_R1KH_ID_LEN,
+ .data = r1kh->id },
+ { .type = FT_RRB_LAST_EMPTY, .len = 0, .data = NULL },
+ };
+
+ if (wpa_ft_new_seq(r1kh->seq, &f_seq) < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to get seq num");
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "FT: Send PMK-R1 push from " MACSTR
+ " to remote R0KH address " MACSTR,
+ MAC2STR(wpa_auth->addr), MAC2STR(r1kh->addr));
+
+ if (wpa_ft_rrb_build_r0(r1kh->key, sizeof(r1kh->key), push, pmk_r0,
+ r1kh->id, s1kh_id, push_auth, wpa_auth->addr,
+ FT_PACKET_R0KH_R1KH_PUSH,
+ &packet, &packet_len) < 0)
+ return -1;
+
+ wpa_ft_rrb_oui_send(wpa_auth, r1kh->addr, FT_PACKET_R0KH_R1KH_PUSH,
+ packet, packet_len);
- wpa_ft_rrb_send(wpa_auth, r1kh->addr, (u8 *) &frame, sizeof(frame));
+ os_free(packet);
+ return 0;
}
void wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr)
{
- struct wpa_ft_pmk_r0_sa *r0;
+ struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
+ struct wpa_ft_pmk_r0_sa *r0, *r0found = NULL;
struct ft_remote_r1kh *r1kh;
if (!wpa_auth->conf.pmk_r1_push)
return;
+ if (!wpa_auth->conf.r1kh_list)
+ return;
- r0 = wpa_auth->ft_pmk_cache->pmk_r0;
- while (r0) {
- if (os_memcmp(r0->spa, addr, ETH_ALEN) == 0)
+ dl_list_for_each(r0, &cache->pmk_r0, struct wpa_ft_pmk_r0_sa, list) {
+ if (os_memcmp(r0->spa, addr, ETH_ALEN) == 0) {
+ r0found = r0;
break;
- r0 = r0->next;
+ }
}
+ r0 = r0found;
if (r0 == NULL || r0->pmk_r1_pushed)
return;
r0->pmk_r1_pushed = 1;
wpa_printf(MSG_DEBUG, "FT: Deriving and pushing PMK-R1 keys to R1KHs "
"for STA " MACSTR, MAC2STR(addr));
- r1kh = wpa_auth->conf.r1kh_list;
- while (r1kh) {
- wpa_ft_generate_pmk_r1(wpa_auth, r0, r1kh, addr, r0->pairwise);
- r1kh = r1kh->next;
+ for (r1kh = *wpa_auth->conf.r1kh_list; r1kh; r1kh = r1kh->next) {
+ if (is_zero_ether_addr(r1kh->addr) ||
+ is_zero_ether_addr(r1kh->id))
+ continue;
+ if (wpa_ft_rrb_init_r1kh_seq(r1kh) < 0)
+ continue;
+ wpa_ft_generate_pmk_r1(wpa_auth, r0, r1kh, addr);
}
}
-#endif /* CONFIG_IEEE80211R */
+#endif /* CONFIG_IEEE80211R_AP */
projects / thirdparty / hostap.git / blobdiff